Pipe for chemical equipment

Implement GB 9948, GB 6479 for seamless steel tube & pipe used for pressure pipes such as petroleum and chemical furnaces, refineries, crackers, hydrogen units, heat exchangers etc.

Please send your inquiry by sales@sunnysteel.com

Category: Seamless pipes Tag: Seamless pipes by applications

Description

Implement GB 9948, GB 6479 for seamless steel tube & pipe used for pressure pipes such as petroleum and chemical furnaces, refineries, crackers, hydrogen units, heat exchangers etc.

Usage	Steel Grade	Specification
Pipe used for Petroleum Cracking	20, 12CrMo, 15CrMo, 12Cr2Mo, 12Cr1MoV,	GB 9948
Pipe used for Petroleum Cracking	12Cr5MoI, 12Cr5MoNT, 12Cr9MoI, 12Cr9MoNT,	GB 9948
Pipe used for High Pressure	20, Q345B, Q345C, Q345D, Q345E, 12CrMo,	GB 6479
Chemical Fertilizer Equipment	15CrMo, 12Cr2Mo, 12Cr5Mo, 10MoWVNb

Mechanical properties for GB 9948 Seamless steel pipe

Gade	tensile strength (MPa)	yield strength (MPa)	elongation (%)	impact energy (J)	Brinell hardness (HB)	delivery status
10	330-490	≥205	≥24	/	/	Normalizing
20	410-550	≥245	≥21	≥39	/	Normalizing
15CrMo	440-640	≥235	≥21	≥47	≤170	Normalizing + tempering
1Cr2Mo	≥390	≥175	≥22	≥92	≤179	Normalizing + tempering
1Cr5Mo	≥390	≥195	≥22	≥92	≤187	annealing

Chemical composition for GB 9948 Seamless steel pipe

Gade	C	Si	Mn	P	S	Cr	Mo	Ni
10	0.07-0.14	0.17-0.37	0.35-0.65	≤0.035	≤0.035	≤0.15	/	≤0.25
20	0.17-0.24	0.17-0.37	0.35-0.65	≤0.035	≤0.035	≤0.25	/	≤0.25
15CrMo	0.12-0.18	0.17-0.37	0.40-0.70	≤0.035	≤0.035	0.80-1.10	0.40-0.55	≤0.30
1Cr2Mo	≤0.15	0.50-1.00	0.30-0.60	≤0.035	≤0.030	2.15-2.85	0.45-0.65	/
1Cr5Mo	≤0.15	≤0.50	≤0.60	≤0.035	≤0.030	4.00-6.00	0.45-0.60	≤0.60

General GB 9948 seamless steel pipe use temperature below 450 ° C, domestic pipe is mainly made of 10, 20 carbon steel hot-rolled pipe or cold drawn pipe.

Chemical Component of GB6479-2013

Grade	C	Si	Mn	Cr	Mo	V	W	Nb	Ni	P S(No More Than)
10	0. 07-0. 13	0. 17 -0. 37	0.35 -0. 65	-	-	-	-	-	-	0.025	0.015
20	0. 17 -0. 23	0.17 -0. 37	0. 35-0.65	-	-	-	-	-	-	0.025	0.015
Q345Ba	0. 12 -0. 20	0.20-0. 50	1.20-1.70	<0. 30	<0. 10	Mis	-	<0.07	W0. 50	0.025	0.015
Q345C"	0. 12 -0. 20	0.20 -0. 50	1.20 -1. 70	W0. 30	<0. 10	<0. 15	-	W0.07	<0. 50	0.025	0.015
Q345D"	0. 12 -0. 18	0.20 -0. 50	1. 20-1.70	W0. 30	<0. 10	<0. 15	-	W0.07	<0. 50	0. 025	0.015
Q345Ea*B	0. 12 -0. 18	0. 20-0. 50	1. 20 -1.70	W0. 30	<0. 10	<0. 15	-	<0.07	<0. 50	0. 025	0.01
12CrMo	0. 08-0. 15	0.17 -0. 37	0. 40-0. 70	0. 40-0. 70	0. 40-0. 55	-	-	-	-	0. 025	0.015
15CrMo	0. 12 -0. 18	0. 17 -0. 37	0. 40-0. 70	0. 80-1. 10	0. 40-0.55	-	-	-	-	0. 025	0. 015
12Cr2Mo	0. 08-0. 15	<0. 50	0. 40-0.6	2.00-2. 50	0. 90-1. 13	-	-	-	-	0.025	0. 015
12Cr5Mo	<0. 15	<0.50	<0. 60	4. 00-6.00	0. 40-0. 60	-	-	-	<0. 60	0. 025	0. 015
LOMoWVNb	0. 07-0. 13	0. 50-0.8	0. 50-0.8	-	0. 60-0. 90	0. 30-0. 50	0. 50-0. 90	0. 06-0. 12	-	0.025	0.015
12SiMoVNb	0.08 -0. 14	0.50 -0.8	0. 60-0. 90	-	0. 90-1. 10	0. 30-0. 50	-	0. 04-0.08	-	0.025	0.015

Awhen It Is Necessary To Add Fine Grain Elements, The Steel Shall Contain At Least One Of Al, Nb, V And Ti. The Added Fine Grain Elements Shall Be Indicated In The Quality Certificate. Ti Content Shall Not Be More Than 0.20%

BAl Content In Steel Shall Not Be Less Than 0.020%, Or Ala Content In Steel Shall Not Be Less Than 0.015%

Mechanical Property of GB6479-2013

Mechanical Property
Grade	Tensile (MPa)	Yield (MPa)			Elong After Fracture A/%		Reduction Of Area (Z/%)	Shork Absorption Energy （KV2）/J
		Steel Tube Wall Thickness/Mm						Test Temperature/℃	Portrait	Transver
		W16	>16 — 40	>40	Portrait	Transver
		Not Less Than							Not Less Than
10	335-490	205	195	185	24	22	一	一	—	一
20	410-550	245	235	225	24	22	一	0	40	27
Q345B	490-670	345	335	325	21	19	一	20	40	27
Q345C	490-670	345	335	325	21	19	一	0	40	27
Q345D	490-670	345	335	325	21	19	一	-20	40	27
Q345E	490-670	345	335	325	21	19	—	-40	40	27
12CrMo	410-560	205	195	185	21	19	—	20	40	27
15CrMo	440-640	295	285	275	21	19	一	20	40	27
12Cr2Moa	450-600	280			20	18	一	20	40	27
12Cr5Mo	390-590	195	185	175	22	20	一	20	40	27
LOMoWVNb	470-670	295	285	275	19	17	一	20	40	27
12SiMoVNb	2470	315	305	295	19	17	50	20	40	27

How do alloying elements affect the performance of cryogenic steels?

We usually call the steel used the temperature range -10 to -273℃ as low-temperature steel or cryogenic steel According to alloying element content and structure, cryogenic steels can be divided into: Aluminum killed C-Mn steel such as 06MnVTi, 06MnVal, 09Mn2Vre, 06MnNb steel, low alloy ferric body low-temperature steel 0.5Ni, 2.5Ni, 3Ni, 3.5Ni, etc., Martensiform low-temperature steels such as 9Ni, 5Ni steel, high alloy austenitic low-temperature steels such as 1Cr18Ni9Ti and 20Mn23Al and so on.

The effect of alloying elements in low-temperature steels mainly refers to its effect on the low-temperature toughness of steels:

Mn

Manganese can improve obviously the low-temperature toughness of steel. Manganese mainly exists in the form of solid solution in steel and plays the role of solid solution strengthening. In addition, manganese is an element that enlarges the austenite region and reduces the transformation temperature (A1 and A3). It is easy to obtain fine and ductile ferrite and pearlite grains, which can increase the maximum impact energy and significantly reduce the brittle transition temperature. In general, the Mn/C ratio should be equal to 3, which can not only reduce the brittle transition temperature of steel, but also compensate for the decrease of mechanical properties caused by the decrease of carbon content due to the increase of Mn content.

Ni

Nickel can alleviate the tendency of brittle transition and significantly reduce the temperature of brittle transition. The effect of nickel on improving the low-temperature toughness of steel is 5 times that of manganese, that is, the brittle transition temperature decreases by 10℃ with the increase of nickel content by 1%. This is mainly because of nickel with carbon, absorbed by the solid solution and reinforcement, nickel also makes a move to the left point of eutectoid steel eutectoid point to reduce the carbon content, reduce the phase transition temperature (A1 and A2), in comparison with the same carbon content of carbon steel, decrease in the number of ferrite and refining, pearlite populations (the carbon content of pearlite is also lower than carbon steel). The experimental results show that the main reason why nickel increases the toughness at low temperature is that nickel-containing steel has more movable dislocations at low temperature and is easier to cross slip. For example, medium alloy low carbon martensiform low-temperature steel 9Ni steel, has high low-temperature toughness, can be used for -196℃. The 5Ni steel developed on the basis of 9Ni steel has good low-temperature toughness at -162~-196℃.

C

With the increase of carbon content, the brittle transition temperature of steel increases quickly and the welding property decreases, so the carbon content of low-temperature steel is limited to less than 0.2%.

P, S, Sn, Pb Sb

Phosphorus, sulfur, arsenic, tin, lead, antimony: these elements are not conducive to the low-temperature toughness of steel.

They segregate in the grain boundary, which reduces the surface energy and resistance of the grain boundary, and causes the brittle crack to originate from the grain boundary and extend along the grain boundary until the fracture is complete.

Phosphorus can improve the strength of steel, but it will increase the brittleness of steel, especially at low temperatures. The brittle transition temperature is obviously increased, so its content should be strictly limited.

O, H, N

These elements will increase the brittle transition temperature of steel. Deoxidized silicon and aluminum killed steels can improve the toughness at low temperatures, but because silicon increases the brittle transition temperature of steels, aluminum killed steels have a lower brittle transition temperature than silicon killed steels.

Main steel products and application

Steel Grade	GB(China)	ASME（USA）	DIN/EN(Euro)	JIS(Jpan)	Application
Carbon steel	10	A106	St35.8	STB340	Economizer tube Water wall tube, pipeline, header pipe, Petrochemical furnace tube, heat exchange tube
	20	SA-106B	St45.8	STB410
	20G	SA-106C	P235GH	STB510
	20MnG	SA-192	P265GH
	25MnG	SA-210A1
	Q345B/C/D/E	SA-210C
Mo steel	15MoG	SA-209 T1	16Mo3	15Mo3	Water wall tube Superheater tube Reheater tube
	20MoG	SA-209 T1a		16Mo3
		SA-209 T1b
Cr-Mo Steel	12Cr1MoG		12Cr1MoV		Superheater tube Reheater tube, Pipeline, Header pipe, Petrochemical furnace tube, Heat exchange tube
Cr-Mo-V steel	12Cr2MoWVTiB		14MoV63
Cr-Mo-Steel	12CrMoG	T11/P11	10CrMo5-5	STB20
Cr-Mo-W Steel	15CrMoG	T12/P12	12CrMo4-5	STB22
Cr-Mo Steel	12Cr2MoG	T22/P22	10CrMo9-10	STB23	Superheater tube, Reheater tube, Main steam pipe, Pipleline, Header pip, Petrochemical furnace tube, Heat exchange tube
Cr-Mo-W steel	10Cr9Mo1VNbN	T23/P23	7CrWVMoNb9-6	STB24
	10Cr9MoW2VNbBN	T24/P24	7CrMoVTIB10-10	STB25
	12Cr1Mo	T5/P5	X10CrMoVNb9-1	STB26
	12Cr5Mol/NT	T9/P9	X10CrWMoVNb9-2
	12Cr9Mol/NT	T91/P91	X11CrMo5+l/NT
		T92/P92	X11CrMo9-1+l/NT
Carbon steel	16MnDG	A333-1		STPL380	Tube & pipe for Low-temperature service
Ni steel	10MnDG	SA-333-1		STPL450
	09DG	A333-6
		SA-333-6
		A333-3
		SA-333-3
Austentic Stainless steel	---	AP304 TP304H		---	Superheater tube, Reheater tube
		TP321 TP321H
		TP347 TP347H
		TP316 TP316H
		S30432 TP310HCbN

Standard

The production of our seamless pipes is tightly regulated and all of the pipes we stock have been fully tested to international standards to ensure we only supply the highest quality products.

ASTM / ASME

American Society for Testing and Materials(ASTM), American Society of Mechanical Engineers (ASME)

Product name	Executive standard	Dimension (mm)	Steel code/ Steel grade
Black and Hot-dipped Zinc-coated Steel Pipes Seamless	ASTM A53	0.3-1200 x 1.0-150	GR.A, GR.B, GR.C
Seamless Carbon Steel for High Temperature Service	ASTM A106	10.3-1200 x 1.0-150	GR.B, GR.C
Seamless Cold-drawn Low-Carbon Steel Heat-Exchanger and Condenser Tubes	ASTM A179	10.3-426 x 1.0-36	Low Carbon Steel
Seamless Carbon Steel Boiler Tubes for High Pressure	ASTM A192	10.3-426 x 1.0-36	Low Carbon Steel
Seamless Cold-drawn Intermediate Alloy Steel Heat-exchanger and Condenser Tubes	ASTM A199	10.3-426 x 1.0-36	T5, T22
Seamless Medium-carbon Steel Boiler and Superheater Tubes	ASTM A210	10.3-426 x 1.0-36	A1, C
Seamless Ferritic and Austenitic Alloy Steel Boiler, Superheater and Heat-exchanger Tubes	ASTM A213	10.3-426 x 1.0-36	T5, T5b, T9 , T11, T22 ,T91
Seamless Carbon and Alloy Steel for Mechanical Tubing	ASTM A333	1/4"-42" x SCH20-XXS	Grade1 Gr. 3,Gr..6, Gr.8 , Gr. 9
Seamless Cold-drawn Carbon Steel Feedwater Heater Tubes	ASTM A556	10.3-426 x 1.0-36	A2, B2
Round and shaped steel cold formed welded and seamless carbon steel structural pipe.	ASTM A500	OD :10.3-820 x 0.8- 75	Grade A, B, C, D
Carbon and alloy steel mechanical tubing, either hot-finished or cold-finished	ASTM A519	10.3-426 x 1.0-36	1020, 1025, 4130, 4140
For seamless ferritic alloy-steel pipe for high-temperature service	ASTM A335	1/4"-42" x SCH20-XXS	A/SA 335 P1, P2, P11, P12, P15, P22, P91, P92, P122

Process

Cold drawn seamless steel tube deformed process

Cold Drawn Seamless Mechanical Tubing (CDS) is a cold drawn 1018/1026 steel tube which offers uniform tolerances, enhanced machinability and increased strength and tolerances compared to hot-rolled products. Cold drawn seamless steel tubes process Cold drawn steel tube is with hot-rolled steel coil as raw material, and tandem cold rolling pickled to remove oxide scale, its finished rolling hard roll, rolling hard volumes due to the continuous cold deformation caused by cold hardening strength, hardness increased indicators declined tough plastic, stamping performance will deteriorate, which can only be used for simple deformation of the parts. Rolling hard roll can be used as the raw material of the hot-dip galvanizing plant, hot dip galvanizing line set annealing line. Rolling hard roll weight is generally 6 to 13.5 tons, the coil diameter of 610mm.

Hot rolled seamless steel pipe deformed process

Hot-rolled seamless steel pipe production base deformation process can be summarized as three stages: perforation, extension and finishing. Hot rolled seamless steel pipe deformed process The main purpose of the perforation process is to become a solid round billet piercing hollow shell. Capillary in the specifications, accuracy and surface quality can not meet the requirements of the finished product, further improvements are needed to deform the metal through. The main purpose of the stretching machine is further reduced sectional view (main compression wall) for a larger axial extension, so that the capillary improved dimensional accuracy, surface quality and organizational performance. After stretching machine rolled steel pipe shortage collectively need further molding mill in order to achieve the requirements of the finished pipe. Rolled steel due to pass in the method widely used in the production of seamless steel tubes. So far, due to the method pass rolling steel can be divided into two categories: core pension without rolling rolling (hollow body rolling), and with the mandrel. Sizing machines, reducing mill and stretch reducing mill belonging to the hole without mandrel type continuous rolling mills are generally coffin. Its main purpose is to reduce the diameter of the deformation process or sizing get finished steel, the wall thickness of process control, can make thinning, thickening or nearly unchanged. All the traditional hole-type rolling machine with mandrel belong to extend machine. The main purpose is to reduce the deformation process perforated capillary wall thickness and outer diameter roll passes in the deformation zone and the mandrel posed, for a larger axial extension. At the same time a certain improvement in the organization, performance, accuracy, surface quality.

Cut to Length

Before cutting pipe and tubing No matter the material, measure the diameter of the pipe or tube to be cut to ensure that you use the right-size tube cutter for the job. When determining how to make a straight cut, use a tape measure and a pencil or other writing instrument to mark on the surface where you want to cut. If possible, mark around the circumference of a pipe, especially when cutting with a handsaw. Ensure that a cut is as straight as possible by securing the pipe with a vise, clamp, miter box or even duct tape to keep the length from shifting out of place while cutting. After cutting pipe and tubing

Unless a cut is perfectly clean, you should expect to remove burrs from around the edge, especially after sawing.
Use a deburring tool to clean the edge after tube cutting.
You may opt to use a metal file on the cut of a metal pipe.

Inspection

Size inspection

Geometrical inspection of steel pipes The outer diameter, wall thickness, bending and length of the steel pipe can be inspected on the inspection table with an outer caliper, a micrometer and a bending ruler, and a length tape measure.

Tolerances of pipes you should notice

Take seamless steel pipe as an example, there are some tolerances that affect quality. Noting this, and you will get a better pipe.

Weight tolerance
For pipe NPS 12 (DN300, 323.8mm) and under, the weight shall vary within -3.5% / +10%.

For pipe over NPS 12 (DN300, 323.8mm), the weight shall vary within -5% / +10%.

Pipe of NPS 4 (DN100, 114.3mm) and smaller may be weighed in convenient lots; pipe in sizes larger than NPS 4 shall be weighed separately.

Quantity tolerance
Normally mills take -10% to +10% tolerance, but TPMCSTEEL keeps ±3% variation.

Length tolerance
For Seamless pipe& tube, if definite cut lengths are ordered, the length shall vary within -0mm / +6mm.

Dimension tolerances of seamless steel pipe

Pipe types	Pipe Szie(mm)		Tolerances
Hot rolled	OD	<50	±0.50mm
	OD	≥50	±1%
	WT	<4	±12.5%
		≥4-20	+15%, -12.5%
		>20	±12.5%
Cold drawn	OD	6-10	±0.20mm
		10-30	±0.40mm
		30-50	±0.45
		>50	±1%
	WT	<1	±0.15mm
		>1-3	+ 15%, – 10%
		>3	+ 12.5%, – 10%

Standard	Hot finished seamless tube		Cold flnished seamless tube
	Out diameter (mm)	Tolerance	Out diameter (mm)	Tolerance
EN10216-1	≤100	+/-0.75% (min.+/-0.5mm)	All	+/-0.5%
EN10216-2	≤100	+/-0.75% (min.+/-0.5mm)		(min. +/-0.30mm)
DIN17175	>100	+/-0.90%		(min. +/-0.30mm)
GB/T 3087	≤460	+/-0.75% (min.+/-0.5mm)	10-30	+/-0.40mm
			>30-50	+/-0.45mm
			>50	+/-1.0%
GB/T 5310 GB/T 9948 GB/T 6479	<57	+/-0.40mm	≤30	+/-0.20mm
	57-325	+/-0.75%	>30-50	+/-0.30mm
	>325-460	+1%,-2mm	>50	+/-0.8%
ASME SA-179M ASME SA-192M ASME SA-209M ASME SA-210M ASME SA-213M JIS G 3461 JIS G 3461	≤101.6	+0.4, -0.8mm	<25.4	+/-0.10mm
			>25.4-38.1	+/-0.15mm
			>38.1-50.8	+/-0.20mm
	101.6-190.5	+0.4, -1.2mm	>50.8-63.5	+/-0.25mm
			>63.5-76.2	+/-0.30mm
			>76.2	+/-0.38mm
ASME SA106 ASME SA335	≤48.3	+/-0.40mm	≤48.3	+/-0.40mm
	48.3-114.3	+/-0.79mm
	114.4-219.1	+1.59, -0.79mm
	219.2-323.9	+2.38, -0.79mm	>48.3	+/-0.79mm
	>324	+/-1.0%	>48.3	+/-0.79mm

Tolerances on wall thickness

The wall thickness at any point shall be within the below tolerance table.

Standard	Hot finished seamless tube			Cold flnished seamless tube
DIN17175	Out diameter OD(mm)	Wall thickness T(mm)	Tolerance	Out diameter (mm)	Wall Thickness T(mm)	Tolerance
	≤130	S≤2Sn	+15%, -10%	--	All	+/-10% (min. +/-0.2mm)
		2Sn	+12.5%, -10%
		S>4Sn	+-/9%
	>130	S≤0.05da	+17.5%, -12.5%
		0.05da	+/-12.5%
		S>0.11da	+/-10%
EN 10216-1 EN 10216-2	≤219.1	-	+/-12.5% (min.+/-0.4mm)
	--	T/D≤0.025	+/-20%
		0.025	+/-15%
		0.05	+/-12.5%
		0.1	+/-10%
GB/T 3087	--	≤20	+15%,-12.5% (min.+0.45, -0.35mm)	--	1.0-3.0	+15%, -10%
GB/T 3087	--	>20	+/-12.5%	--	>3	+12.5%, -10%
GB/T 5310 GB/T 9948 GB/T 6479	--	<4.0	+15%,-10% (min.+0.48, -0.32mm)	--	2-3	+12%,-10%
		4-20	+12.5%,-10%		>3	+/-10%
		>20	+/-10%		>3	+/-10%
ASME SA-179M ASME SA-192M ASME SA-209M ASME SA-210M ASME SA-231M JIS G 3461 JIS G 3462	--	2.41-3.8	+35%, -0%	≤38.1	--	+20%,-0%
		3.8-4.6	+33%,-0%	>38.1	--	22%,-0%
		>4.6	+28%,-0%	--	--	--
ASME SA-106 ASME SA-335	--	All	+/12.5%		All	+/-10%

Note:

The size in the table above is for the hot-rolled tubes.
The size of the green area is the regular specification, we can accept orders directly, but the yellow area shall be subject to a technical evaluation.
The Out side diameter (O.D) and wall thickness (W.T.) of the tube should be complied.

PMI test

Positive material identification (PMI) testing is the examination of a material, usually a metallic alloy, to confirm the material is consistent with the user’s request.

Delivery

Steel pipe delivery status(condition)

Steel pipe delivery status(condition): cold / hard (BK), cold / soft (BKW), after cold stress relief annealing (BKS), annealing (GBK), normalized (NBK).

Condition on delivery of steel pipe

Term	Symbol	Explanation
Cold-finished/hard (cold-finished as-drawn)	BK	No heat treatment after the last cold-forming process. The tubes therefore have only low deformability.
Cold-finished/soft (lightly cold-worked)	BKW	After the last heat treatment there is a light finishing pass (cold drawing) With proper subsequent processing, the tube can be cold-formed (e.g. bent, expanded) within certain limits.
Annealed	GBK	After the final cold-forming process the tubes are annealed in a controlled atmosphere or under vacuum.
Normalized	NBK	The tubes are annealed above the upper transformation point in a controlled atmosphere or under vacuum.

The general cold strip mills, volume should go through continuous annealing (CAPL unit) to eliminate cold hardening and rolling stress, or batch annealing reach the mechanical properties of the corresponding standard specifies. Cold rolled steel surface quality, appearance, dimensional accuracy better than hot-rolled plate, and right-rolled thin product thickness is about 0.18mm, so the majority of users favor.

Cold rolled steel coil substrate products deep processing of high value-added products. Such as electro-galvanized, hot dip galvanized, electro-galvanized fingerprint resistant, painted steel roll damping composite steel, PVC laminating steel plates, etc., so that the excellent quality of these products has a beautiful, high resistance to corrosion, has been widely used.

Cold rolled steel coil finishing after annealing, cut the head, tail, trimming, flattening, smooth, heavy volume, or longitudinal clipboard. Cold-rolled products are widely used in automobile manufacturing, household electrical appliances, instruments, switches, buildings, office furniture and other industries. Steel plate strapping package weight of 3 to 5 tons. Flat sub-volume typically 3 to 10 tons / volume. Coil diameter 6m.

Packing

There are probably hundreds of different methods for packing a pipe, and most of them have merit, but there are two principles that are vital for any method to work prevent rusting and Sea transportation security.

Plastic caps plugged at the two sides of pipe ends
Should be avoided by the steel strapping and transport damage
Bundled signs should be uniform and consistent
The same bundle(batch) of steel pipe should be came from the same furnace.
The steel pipe has the same furnace number, the same steel grade, the same specifications.

Our packing can meet any needs of the customers.

Inquiry

Need to inquire about our products? Fill out the form below and our staff will be in touch!

FAQ

Q: How long is your delivery time? A: The delivery time of customized products is generally 25 35 days, and non customized products are generally shipped within 24 hours after payment. Q: Do you provide samples? Is it free? A: If the value of the sample is low, we will provide it for free, but the freight needs to be paid by the customer. But for some high value samples, we need to charge a fee. Q: What are your payment terms? A: T/T 30% as the deposit,The balance payment is paid in full before shipment Q: What is the packaging and transportation form? A: Non steaming wooden box and iron frame packaging. Special packaging is available according to customer needs. The transportation is mainly by sea. Q: What is your minimum order quantity? A: There is no minimum order quantity requirement. Customized products are tailor made according to the drawings provided by the customer.