Seamless Alloy Steel Tube

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

CD	Cold Drawn Seamless	CFS	Cold Finished Seamless	HFS	Hot Finished Seamless
CDN	Cold Drawn, Condition N	CDA	Cold Drawn Annealed	HFHT	Hot Finished Heat Treated
CDHT	Cold Drawn Heat Treated	DOM	Drawn Over Mandrel
CDSR	Cold Drawn Stress Relieved	HRA	Hor Rolled Annealed

Specifications

Grade	Class	ASTM	MIL	AMS
4130	CDN	A-519	T-6736	6360
4130	CDSR	A-519	-	-
4130	CFS.HFS	A-519	-	6371
4135	CDN	A-519	T-6735	6365
4135	CDSR	A-519	-	-
4135	CFS.HFS	A-519	-	6372
4140	CDSR	A-519	-	-
4140.42	CDA.HRA	A-519	-	-
4140	CFS.HFS	A-519	-	6381
4140.42	HFHT	A-519	-	-
4150	CDHT	A-519	-	-
4340	HRA	A-519	-	-
4340	CFS.HFS	A-519	-	6415
4340	HFHT	A-519	-	-
5130H	CFS	A-519	-	-
8615	HFS	A-519	-	-
8617	CFS	A-519	-	-
8620	CFS	A-519	-	-
9310	CFS	A-519	-	-

Properties

Material Grade & Temper	Tensile K.S.I.	Yield K.S.I.	Elong % In "2"	Hard. B.H.N.
4130 Normalized	90 approx.	70 approx.	20 approx.	187 approx.
4130 Annealed	80 approx.	50 approx.	30 approx.	165 approx.
4130 CDSR	110 approx.	95 approx.	15 approx.	228 approx.
4130 Heat Treated	125-180	100-165	8-12	250-355
4135 Normalized	95 approx.	80 approx.	15 approx.	197 approx.
4135 Annealed	85 max.	55 approx.	30 approx.	174 approx.
4135 CDSR	125 approx.	100 approx.	10 approx.	235 approx.
4140/42 Annealed	90 approx.	65 approx.	25 approx.	197 approx.
4140 CDSR	120 approx.	100approx.	10 approx.	245 approx.
4140 Heat Treated	140 approx.	115 approx.	16 approx.	311 approx.
4150 Heat Treated	160 approx.	130 approx.	16 approx.	346 approx.
4340 Annealed	110 approx.	75 approx.	20 approx.	225 approx.
4340 Heat Treated	140 approx.	115 approx.	16 approx.	311 approx.
6820 Annealed	78 approx.	56 approx.	29 approx.	115 approx.

The information and data presented herein are typical or average values and are not a guarantee of maximum or minimum values. Applications specifically suggested for material described herein are made solely for the purpose of illustration to enable the reader to make his own evaluation and are not intended as warranties, either express or implied, of fitness for these or other purposes.

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

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