JIS Seamless pipes

JIS seamless pipe is steel pipe that has been created by JIS and meets certain performance requirements. Manufacturers follow Japan Industrial Standards voluntarily.

JIS G3461 Carbon Steel Boiler and Heat Exchanger Tubes JIS G3429 Seamless steel tubes JIS G3456 Seamless tubes for high pressure service JIS G3441 Alloy Steel Tubes for General Structural Purpose

JIS G3455 Seamless tubes for high pressure service JIS G3462 boiler tubes JIS G3454 Carbon steel pipes

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.

JIS G3461 pipe
JIS G3455 STS370
JIS G3456 STPT370
JIS G3441 Alloy tube
JIS G3454 STPG370
JIS G3462 STB A12

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.
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 G3429
Steel grade:STH38, STH55, STH67
Application: Seamless Steel Tubes in High Pressure Gas Cylinder

JIS G3439
Steel grade: STO-G, STO-H, STO-J, STO-N, STO-C, STO-D, STO-E
Application: Seamless Steel Oil Well, Casing, Tubing and Drill Pipe

JIS G3441
Steel grade:SCr 420TK, SCM415TK, SCM418TK, SCM420TK, SCM430TK, SCM435TK, SCM440TK
Application:Alloy Steel Tubes for General Structural Purpose

JIS G3444
Steel grade: STK 30, STK 41, STK 50, STK 51, STK 55
Application: Carbon Steel Tubes for General Structural Purpose
Dimension Range: 21.7-1016.0 mm

JIS G3445
Steel grade: STKM11A,STKM12A, STKM12B, STKM12C, STKM13A, STKM13B, STKM13C, STKMI4A, STKM14B, STKM14C, STKM15A, STKM18C, STKM16A, STKM18C, STKM17A, STKM17C, STKM18A, STKM18B, STKM18C, STKM19A, STKM19C, STKM20A
Application: Carbon Steel Tubes for Machine Structural Purposes

JIS G3454
Steel grade: STPG 38, STPG 42
Application: Carbon Steel Pipes for Pressure Service
Dimension Range: 10.5-660.4 mm

JIS G3455
Steel grade: STS 38, STS 42, STS 49
Application: Carbon Steel Pipes for High Pressure Service
Dimension Range: 10.5-660.4 mm

JIS G3456
Steel grade: STPT 38, STPT 42, STPT 49
Application: Carbon Steel Pipes for High Temperature Service
Dimension Range:10.5-660.4 mm

JIS G3458
Steel grade:STPA 12, STPA 20, STPA 22, STPA 23, STPA 24, STPA 25, STPA 26
Application: Alloy Steel Pipes for Service
Dimension Range:10.5-660.4 mm

JIS G3460
Steel grade:STPL 39, STPL 46, STPL 70
Application: Steel Pipes for Low Temperature Service
Dimension Range:10.5-660.4 mm

JIS G3461
Steel grade:STB 35, STB 42, STB 52
Application: Carbon Steel Boiler and Heat Exchanger Tubes
Dimension Range:15.9-139.8 mm

JIS G3462
Steel grade: STBAl2, STBAM, STBA20, STBA22, STBA23, STBA24, STBA25, STEA26
Application:Alloy Steel Boiler and Heat Exchanger Tubes
Dimension Range: 15.9-139.8 mm

JIS G3464
Steel grade: STBL 39, STBL46, STBL 70
Application: Steel Heat Exchanger Tubes for Low Temperature Service
Dimension Range: 15.9-139.8 mm

JIS G3465
Steel grade: STM-055, STM-C65, STM-R60, STM-1170, STM-1180, STM-R85
Application: Seamless Steel Tubes for Drilling
Dimension Range: Casing: 43-142mm / Hollow Pipes: 34-180mm / Drilling:33.5-50mm

JIS G3467
Steel grade: STF 42, STFAl2, STFA22, STFA23, 5TFA24, STFA23, STFA26
Application:Steel Tubes for Fired Heater
Dimension Range:60.5-267.4mm

Measurement size & Testing

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.

We have the professional engineers, measurement the size of steel pipes.

And then calculate a steel pipe and tube theoretic weight.

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.

Seamless steel pipe

Seamless steel pipes are produced using an extrusion mold. Welded steel pipes are produced by rolling a sheet of steel into a tube and welding the seam. Seamless steel pipes are less expensive. The third method is casting. Molten steel is poured into a casting mold.

Please check more in-formations about seamless pipes and tubes as below:

Seamless Steel pipes by application >>

Steel pipe are ubiquitous and can be found underground and within residential walls, laboratories, and commercial and industrial structures. Seamless steel pipe transport fluids including water, natural gas, waste and air. Three manufacturing methods exist to produce steel pipes.

---

ASTM Seamless pipes >>

The ASTM/ASME seamless steel pipes are extensively applied in petroleum, chemical, power, boiler, and machinery industries. Our prefect products and preferential price have won us customers' trust and consistently favorable comments.

---

DIN Seamless steel pipe >>

DIN/EN seamless pipes are extensively applied in petroleum, chemical, power, boiler, and machinery industries. Our prefect products and preferential price have won us customers’ trust and consistently favorable comments.

---

JIS Seamless pipes >>

JIS seamless pipe is steel pipe that has been created by JIS and meets certain performance requirements. Manufacturers follow Japan Industrial Standards voluntarily.

---

Leading Big O.D. Steel seamless pipes supplier in Asia >>

Big OD seamless pipes are extensively applied for the nuclear device, gas, petrochemical, ship building and boiler industries. Big OD seamless pipes dominates 65% of market share in Chinese boiler industry.

---

API pipes & tubes >>

The American Petroleum Institute has several standard specifications for pipe. They set forth dimensions, materials, quality control during manufacture, minimum physical properties such as yield strength, etc.

---

How to packing the seamless pipe >>

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.

We can makes and markets cold-drawn and hot rolled seamless steel pipes and cold-drawn special-section seamless pipes which are widely applied in the industries of petrochemical, boiler, automobile, mechanical, construction, chain, electric of the company is 80000t.

Inspection and Test:
Chemical Composition Inspection, Mechanical Properties Test(Tensile Strength,Yield Strength, Elongation, Flaring, Flattening, Bending, Hardness, Impact Test), Surface and Dimension Test,No-destructive Test, Hydrostatic Test.

Surface treatment:
Oil-dip, Varnish, Passivation, Phosphating, Shot Blasting

ASTM A213 T22 alloy tube

We are manufacturer of ASTM A213 T22 alloy tube and supply high quality ASTM A213 T22 alloy tube in both large and small quantities worldwide and offer you the best prices in the market.



We have a team of experienced professionals with years of experience in manufacturing. (www.sunnysteel.com)

Sunny Steel Enterprise Ltd.

• 0086-21-33780199
• No. 273, Siping Road, Shanghai, 200081, China
• Sum Xuu
• sumxu@163.com

ASTM A333 Alloy Steel Pipe for Low-Temperature Service

We are manufacturer of ASTM A333 Alloy Steel Pipe and supply high quality ASTM A333 Alloy Steel Pipe in both large and small quantities worldwide and offer you the best prices in the market.



We have a team of experienced professionals with years of experience in manufacturing. (www.sunnysteel.com)



Sunny Steel Enterprise Ltd.

• 0086-21-33780199
• No. 273, Siping Road, Shanghai, 200081, China
• Sum Xuu
• sumxu@163.com

ASTM A335 P91 High pressure boiler pipes

We are manufacturer of ASTM A335 P91 Alloy pipe and supply high quality ASTM A335 P91 Alloy pipe in both large and small quantities worldwide and offer you the best prices in the market.



We have a team of experienced professionals with years of experience in manufacturing. (www.sunnysteel.com)

Seamless steel pipe

Seamless steel pipes are produced using an extrusion mold. Welded steel pipes are produced by rolling a sheet of steel into a tube and welding the seam. Seamless steel pipes are less expensive. The third method is casting. Molten steel is poured into a casting mold.

Please check more in-formations about seamless pipes and tubes as below:

Seamless Steel pipes by application

Steel pipe are ubiquitous and can be found underground and within residential walls, laboratories, and commercial and industrial structures. Seamless steel pipe transport fluids including water, natural gas, waste and air. Three manufacturing methods exist to produce steel pipes.

---

ASTM Seamless pipes

The ASTM/ASME seamless steel pipes are extensively applied in petroleum, chemical, power, boiler, and machinery industries. Our prefect products and preferential price have won us customers' trust and consistently favorable comments.

---

DIN Seamless steel pipe

DIN/EN seamless pipes are extensively applied in petroleum, chemical, power, boiler, and machinery industries. Our prefect products and preferential price have won us customers’ trust and consistently favorable comments.

---

JIS Seamless pipes

JIS seamless pipe is steel pipe that has been created by JIS and meets certain performance requirements. Manufacturers follow Japan Industrial Standards voluntarily.

---

Leading Big O.D. Steel seamless pipes supplier in Asia

Big OD seamless pipes are extensively applied for the nuclear device, gas, petrochemical, ship building and boiler industries. Big OD seamless pipes dominates 65% of market share in Chinese boiler industry.

---

API pipes & tubes

The American Petroleum Institute has several standard specifications for pipe. They set forth dimensions, materials, quality control during manufacture, minimum physical properties such as yield strength, etc.

---

How to packing the seamless pipe

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.

We can makes and markets cold-drawn and hot rolled seamless steel pipes and cold-drawn special-section seamless pipes which are widely applied in the industries of petrochemical, boiler, automobile, mechanical, construction, chain, electric of the company is 80000t.

Inspection and Test:
Chemical Composition Inspection, Mechanical Properties Test(Tensile Strength,Yield Strength, Elongation, Flaring, Flattening, Bending, Hardness, Impact Test), Surface and Dimension Test,No-destructive Test, Hydrostatic Test.

Surface treatment:
Oil-dip, Varnish, Passivation, Phosphating, Shot Blasting

Production Equipment

Hot Piercing Workshop Inspection Workshop

Acid Cleaning Workshop ECT-620 Eddy Currentautomatic Test System

Cold Drawn Workshop

Heat Treatment Workshop

Workshop and equipment in en OCTG base

Defectoscope Hydraulic Machine Weighting and Packing Machine

High-precision CNC threading machine Scrawing Machine Marking Machine

JIS G3454 Carbon steel pipes

JIS G3454 Carbon steel pipes

carbon steel pipe, JIS G3454, JIS G3454 STPG370, JIS G3454 STPG410, steel tube, steel tubes 

JIS G3454 standard specifies the carbon steel pipes, hereinafter referred to as the pipes.

Standard:

• JIS G3454 Carbon steel pipes for pressure service at an approximate maximum temperature of 350 Degrees Celsius.

Size range of JIS G3454 (mm):

• Outer Dimensions: 19.05mm- 114.3mm
• Wall Thickness:2.0mm -14 mm
• Length: max 16000mm

Application:

• Carbon steel pipes for pressure service
• High pressure service and high temperature service

Packing:

• Packing: in bundles
• Surface: Varnish coating
• Ends: Beveled or Plain ends with Plastic caps

Inspection & Certification:

• 1) Certification: ISO, API, ASTM, DIN etc.
• 2) Mill Test Certificate: EN10204/3.1B
• 3) Third party inspection: SGS, BV, Lloyds etc.

The main products of steel / steel grade:

• JIS G3454 STPG370
• JIS G3454 STPG410

Packing: Bare/bundles/crates/crate protection at the both sides of tubes or as per customers’ requirements .
Painting: as requested.

Chemical Compositions(%) of JIS G3454

Grade	C	Si	Mn	P	S
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

Mechanical Properties of JIS G3454

Grade	Yield Strength (Mpa)	Tensile Strength (Mpa)	Elongation (%)
JIS G3454 STPG370	≥216	≥370	≥30
JIS G3454  STPG410	≥245	≥410	≥25

Pertaining to the electric-resisitance welded steel tubes, when previously agreed upon with the manufacturer, the purchaser may designate the supplementary quality requirements Z3 or Z4 speified in appendix, in addition to the items specified in this text.

JIS G3462 boiler tubes

JIS G3462 boiler tubes

boiler tube, boiler tubes, heat exchanger tubes, JIS G3462, JIS G3462 STB A12, JIS G3462 STB A13, JIS G3462 STB A24, Seamless pipe, Seamless Pipes, seamless steel tubes, Seamless tube, seamless tubes, steel tube

JIS G3462  is a JIS standard refers to alloy steel boiler tubes and heat exchanger tubes. This steel tubes is used in carbon steel pipes for tube heat-exchange inside and outside, such as boiler water steel pipe, superheater tube, condenser tube and more.
However, it is not applicable to the steel tubes for heating furnace and steel heat exchanger tubes for low temperature service.

The size range of  JIS G3462 boiler tubes(mm):

• Outer Dimensions: 19.05mm-168.3mm
• Wall Thickness:2.0mm-14 mm
• Length: max 19000mm

Application of JIS G346s seamless tubes:

• used for exchanging heat on the inside and outside of the tube, such as water tubes, smoke tubes, superherater tubes, air preheater tubes, etc. of boilers, and heat exchanger industries.
• it is not applicable to the steel tubes for heating furnace and those for heat exchangers for low temperature service.

The main products of steel / steel grade:

• JIS G3462 STB A12
• JIS G3462 STB A13
• JIS G3462 STB A24

Corresponding to international standards

• ISO 9329-2:1997 Seamless steel tubes for pressure purposes-Technical delivery conditions-Part 2: Unalloyed and alloyed steels with specified elevated temperature properties.
• ISO 9330-2:1997 Welded steel tubes for pressure purposes-Technical delivery conditions-Part 2: Electric resistance and induction welded unalloyed and alloyed steel tubes with specified elevated temperature properties.

Delivery Condition:

• Heat treatment,Annealed, Normalized, Normalized and Tempered

Surface treatment:

• Oil-dip, Varnish, Passivation, Phosphating, Shot Blasting
• Painting as requested.

Chemical composition of JIS G3462 heat exchanger tubes(%):

Grade	C	Si	Mn	P	S	Cr	Mo
JIS G3462 STB A12	0.10~0.20	0.10~0.50	0.30~0.80	<0 td>	<0 td>	—	0.45~0.65
JIS G3462 STB A13	0.15~0.25	0.10~0.50	0.30~0.80	<0 td>	<0 td>	—	0.45~0.65
JIS G3462 STB A24	<0 td>	<0 td>	0.30~0.60	<0 td>	<0 td>	1.90~2.60	0.87~1.10

Mechanical behavior of JIS G3462 heat exchanger tubes (%):

Grade	tensile strength kgf/mm²{N/mm²}	yield strength kgf/mm²{N/mm²}
JIS G3462 STB A12	<39{382}	<21{206}
JIS G3462 STB A13	<42{412}	<21{206}
JIS G3462 STB A24	<42{412}	<21{206}

Tolerance on Outside Diameter in JIS G3462

O.D.	TOLERANCE ON OUTSIDE DIAMETER
	HOT ROLLED SEAMLESS PIPES	SEAMLESS PIPES THROUGH QUENCH AND NORMALIZED	COLD DRAWN SEAMLESS PIPES THRONG, THE HOT TREATMENT EXCEPT QUENCH AND NORMALIZED	ELECTRIC WELDED PIPES EXCEPT COLD DRAWN	COLD DRAWN ELECTRIC WELDED PIPES
MM
< td>	+0.4 -0.8	±0.25	±0.10	±0.15	±0.10
<25.40		±0.25	±0.15	±0.20	±0.15
<40-50		±0.25	±0.20	±0.25	±0.20
<50.60		±0.25	±0.25	±0.30	±0.25
<60-80		±0.30	±0.30	±0.40	±0.30
<80.100		±0.40	±0.40	-0.60,+0.40	±0.40
<100-120	+0.4 -1.2	-0.60,+0.40	-0.60,+0.40	-0.80,+0.40	-0.60,+0.40
<120-160		-0.80,+0.40	-0.80,+0.40	-1.00,+0.40	-0.80,+0.40
<160-200	-1.8,+0.4	-1.20,+0.40	-1.20,+0.40	-1.20,+0.40	-1.20,+0.40
<200	-2.4,+0.4	-1.60,+0.40	-1.60,+0.40	-1.60,+0.40	-1.60,+0.40

Tolerance on Wall Thickness in JIS G3462

WALL THICKNESS (MM)	HOT ROLLED SEAMLESS PIPE		COLD DRAWN SEAMLESS PIPE		ELECTRIC WELDED PIPE
	O.D（MM）		O.D（MM）		O.D（MM）
	< td>	<100	< td>	<40	< td>	<40
	(%)
< td>	-	-	-0,+0.4mm	+22 -0	-0,+0.3mm	+18 0
<2-2.4	-0,+40	-	+20 -,0		+18 -0
<2.4-3.8	-0,+35	-0,+35
<3.8-4.6	-0,+23	-0,+33
<4.6	-0,+28	-0,+28

Tolerance on the Length in JIS G3462

ITEM		TOLERANCE AN LENGTH
OD<50mm td>	<7m td>	-0, +7mm
	<=7m	Every 3m increase in length, the plus tolerance be increased by 3mm with a maximum of 15mm
OD<=50mm	<7m td>	-0, +10mm
	<=7m	Every 3m increase in length, the plus tolerance be increased by 3mm with a maximum of 15mm
OD: Outside Diameter

JIS G3441 Alloy Steel Tubes for General Structural Purpose

JIS G3441 Alloy Steel Tubes for General Structural Purpose

JIS G3441, JIS G3441 SCM415TK, JIS G3441 SCM418TK, JIS G3441 SCM420TK, JIS G3441 SCM430TK, JIS G3441 SCM435TK, JIS G3441 SCM440TK, JIS G3441 SCr420TK, steel tube, steel tubes 

JIS G3441 alloy steel tubes are widely used in mechanical structure, natural gas, oil, water transportation, chemical fertilizer equipment with boiler ect.

Application of  JIS G3441 alloy steel tubes:

mechanical structure, natural gas, oil, water transportation, chemical fertilizer equipment with boiler, petroleum cracking, geological drilling, oil drilling, etc.

Quality Standard and Steel Grade:

• JIS G3441 SCr420TK
• JIS G3441 SCM415TK
• JIS G3441 SCM418TK
• JIS G3441 SCM420TK
• JIS G3441 SCM430TK
• JIS G3441 SCM435TK
• JIS G3441 SCM440TK

Size range of JIS G3441 Alloy Steel Tubes:

Tolerance on Outside Diameter in JIS G3441

O.D.(mm)	Tolerance(%)
<13 td>	±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

Tolerance on Wall Thickness in JIS G3441

W.T.(mm)	Tolerance
< td>	-0.5,+0.6
<4	-12.5%, +15%

How to test JIS G3441 Alloy Steel Tubes:

• Chemical Component Analysis, Mechanical Properties (Ultimate tensile strength, Yield strength, Elongation)
• Technical Properties (Flattening Test, Flaring Test, Bending Test, Hardness Test, Blow Test, Impact Test etc)
• Exterior Size Inspection.
• Mill Test Certificate:EN 10204/3.1B
• Delivery Condition:BKS, NBK,BK ,BKW, GBK(+A), NBK(+N), BK(+C)

JIS G3441 Alloy Steel Tubes Chemical composition Limits(%)

Steel grade	Steel grade(old)	C	Si	Mn	P	S	Cr	Mo
SCr420TK	–	0.18~0.23	0.15~0.35	0.60~0.85	<0 td>	<0 td>	0.90~1.20	0.15~0.30
SCM415TK	–	0.13~0.18	0.15~0.35	0.60~0.85	<0 td>	<0 td>	0.90~1.20	0.15~0.30
SCM418TK	–	0.16~0.21	0.15~0.35	0.60~0.85	<0 td>	<0 td>	0.90~1.20	0.15~0.30
SCM420TK	–	0.18~0.23	0.15~0.35	0.60~0.85	<0 td>	<0 td>	0.90~1.20	0.15~0.30
SCM430TK	As STKS1	0.33~0.38	0.15~0.35	0.60~0.85	<0 td>	<0 td>	0.90~1.20	0.15~0.30
SCM435TK	As STKS3	0.33~0.38	0.15~0.35	0.60~0.85	<0 td>	<0 td>	0.90~1.20	0.15~0.30
SCM440TK	–	0.38~0.43	0.15~0.35	0.60~0.85	<0 td>	<0 td>	0.90~1.20	0.15~0.30

 Packing:

• Plastic plugs in both ends, Hexagonal bundles of max. 2,000kg with several steel strips
• Two tags on each bundle
• Wrapped in waterproof paper
• PVC sleeve, and sackcloth with several steel strips