Carbon Steel JIS G 3454 Tubes are manufactured as per JIS Specification. CS JIS G3454 Seamless Tubes mechanical properties can be varied greatly by heat treating. Carbon Steel JIS G3454 Specification Covers Carbon steel tubes for machine structural purposes. CS JIS G3454 pipes are used for pressure conditions at an limited of maximum temperature of 350 Degree C. Carbon Steel JIS G3454 Tubes are mainly used in automobile, hydraulic system and precision machinery parts for cars and cylinder.
JIS G3454 Carbon Steel Grade STPG 370 Specification Covers Carbon Steel Tubes for Pressure Service. We offer CS JIS G3454 available grades STPG 410, STPG 370 and a diverse range of finish options to meet the appearance requirements and performance for most applications. Tubos is the largest stockholder of JIS G3454 STPG 410 Tubes and JIS G3454 STPG 370 Tubes with huge inventory.
The main products of steel / steel grade:
JIS G3454(STPG370, STPG410)
Packing: Bare/bundles/crates/crate protection at the both sides of tubes or as per customers’ requirements .
Painting: as requested.
Chemical Compositions(%)
Standard
Grade
C
Si
Mn
P
S
JIS G3454
STPG370
≤0.25
≤0.35
0.30-0.90
≤0.040
≤0.040
STPG410
≤0.30
≤0.35
0.30-1.00
≤0.040
≤0.040
JIS G3455
STS370
≤0.25
0.10-0.35
0.30-1.10
≤0.035
≤0.035
STS410
≤0.30
0.10-0.35
0.30-1.40
≤0.035
≤0.035
STS480
≤0.33
0.10-0.35
0.30-1.50
≤0.035
≤0.035
JIS G3456
STPT370
≤0.25
0.10-0.35
0.30-0.90
≤0.035
≤0.035
STPT410
≤0.30
0.10-0.35
0.30-1.00
≤0.035
≤0.035
STPT480
≤0.33
0.10-0.35
0.30-1.00
≤0.035
≤0.035
Standard
Grade
Yield Strength (Mpa)
Tensile Strength (Mpa)
Elongation (%)
JIS G3454
STPG370
≥216
≥370
≥30
STPG410
≥245
≥410
≥25
JIS G3455
STS370
≥216
≥370
≥30
STS410
≥245
≥410
≥25
STS480
≥275
≥480
≥25
JIS G3456
STPT370
≥216
≥370
≥30
STPT410
≥245
≥410
≥25
STPT480
≥275
≥480
≥25
The tubes shall be manufactured by seamless process, electric resistance welding process, or butt welding process, and those of other grades shall be manufactured by seamless process or electric resistance welding process. The tube shall be as manufactured or as cold-finished condition, or they shall be subjected to appropriate heat treatment.
The tubes shall be practically straight. and the two ends shall be at right angles to the axis of the tube. The tubes shall be free from defects detrimental to practical use.
Japanese Industrial Standards (JIS) developed by the organization apply to a wide variety of industrial services and technologies such as automobiles, metallurgy, ships and medical equipment
The method for making cold-drawn seamless pipes involves taking a round “billet” or bar of steel and boring it in the center, turning it, cutting it, heating it to make it more pliable, then “drawing” it (extruding or pulling it) to make it a longer and thinner tube.
Japanese Industrial Standards for steel
Japanese Industrial Standards specifies the standards used for industrial activities in Japan. The standardization process is coordinated by Japanese Industrial Standards Committee and published through Japanese Standards Association.
The Industrial Standardization Law was revised in 2004 and the JIS mark product certification system was changed. Standards are named like “JIS X 0208:1997″, where X denotes area division, followed by four digits (or five digits for some of the standards corresponding ISO standards) and the revision release year.
G – Ferrous Materials and Metallurgy
H – Nonferrous Materials and Metallurgy
MTC IN EN 10204.3
EN 10204:2004 is for metallic products-and this norm tell us things about Types of inspection documents. There are no material standards.
Mostly material is defined with its chemical composition and mechanical properties in a public standars like ISO, EN, JIS, ASTM etc.
What is JIS?
Japanese Industrial Standards (JIS) specifies the standards used for industrial activities in Japan. The standardization process is coordinated by Japanese Industrial Standards Committee and published through Japanese Standards Association.
Tolerance of JIS seamless pipe
Table 1: Tolerance on Outside Diameter in JIS G3441, G3444, G3445
APPLICATION
TOLERANCE ON OUTSIDE DIAMETER (MM)
JIS G3441
JIS G3444
JIS G3445
50
±0.5
>50
±1%
JIS G3441
JIS G3444
JIS G3445
<50
±0.25
>50
±0.5%
JIS G3441
JIS G3445
<25
±0.12
>25-40
±0.15
>40-50
±0.18
>5:.60
±0.20
>60-70
±0.23
>70-80
±0.25
>80-90
±0.30
>90-100
±0.40
>100
±0.5%
JIS G3441
<13
±0.25
>13-25
±0.40
>25-40
±0.60
>40-65
±0.80
>65-90
±1.00
>90-140
±1.20
>140
By agreement
Table 2: Tolerance on Wall Thickness in JIS G3441, G3444, G3445
APPLICATION
TOLERANCE ON WALL THICKNESS (MM)
JIS G3441
JIS G3444
JIS G3445
<=4
-0.5,+0.6
>4
-12.5%, +15%
JIS G3441
JIS G3444
JIS G3445
<=3
±0 .3
>3
±10%
JIS G3441
JIS G3445
<=2
±0.15
>2
±8%
APPLICATION
TOLERANCE ON OUTSIDE DIAMETER
TOLERANCE ON WALL THICKNESS
<40A
±0.5mm
<=4mm
+0.6mm
>50A, <125A
±1%
-0.005
Hot rolled seamless pipes
150A
±1.6mm
>4mm
+15%
-12.5%
>200A
±0.8%
More than 350mm,the tolerance is ±0.5%
Cold drawn seamless pipes and electric resistant welded pipes
<25A
±0.3mm
<=3mm
±0.3mm
>32A
±0.8%
>3mm
±10%
But more than 350mm, the tolerance is ±0.5%
Table 4: Tolerance on Outside Diameter and Wall Thickness in JIS G3455, G3456, G3458, G3460
APPLICATION
TOLERANCE ON OUTSIDE DIAMETER
TOLERANCE ON WALL THICKNESS
Hot Rolled Seamless Pipes
<=50mm
±0.5mm
<=4mm
±0.5mm
>50-160mm
±1%
>160-200mm
±1.6mm
>4mm
±12.5%
>200mm
±0.8%
More that 350mm, the tolerance is ±0.5%
Cold Drawn
Seamless Pipes
and Electric Resistant
Welded Pipes
JIS seamless pipe testing covers many specifications, including alloy, size, toughness and composition.
Those using steel products purchase the product that fulfills the requirements they need for what they are building.
How To Measure Hardness Of Steel Pipe
Packing:
Packed in wooden crates, wrapped in plastic, and suitably protected for sea-worthly delivery or as requested.
Both ends of each crate will indicate the order no., heat no., dimensions, weight and bundles or as requested.
Delivery:
Pipes are supplied in hexagonal bundles or round bundles tied with steel strip.
Weight of bundle – up to 5000 kg upon request of customer.
Each bundle is furnished with three tags.
Other Range of JIS standards for steel pipes
JIS seamless pipe according to alloy, stainless steel or carbon. It tests steel’s properties, hardness, resistance to corrosion, pitting, heat treating processes and others. The results are listed in a main JIS steel grade for steel pipe as below.
JIS G3439
Seamless Steel Oil Well, Casing, Tubing and Drill Pipe
JIS G 3101 SS400 is one of the most commonly used hot rolled general structural steel.
SS400 is a Japanese brand of ordinary steel products,
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
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 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. 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
≥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
(min. +/-0.30mm)
DIN17175
>100
+/-0.90%
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%
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%
>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%
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.
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.