Machine pipe:
1. Manufacturer
2. Good quality
3. Best service
4. ISO9001-2000

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We are specialized in producing both standard and non-standard steel hollow box, including square steel pipe with size from 15*15mm to 600*600mm and rectangular steel pipes with size from 10*15mm to 550*600mm, which can be black steel pipe or galvanized steel pipes. We also do business in High Frequency Longitude Welding pipes(ERW) with outer diameter from 1/2" to 14", SSAW with outer diameter from 219mm to 2020mm, seamless steel pipes and steel strips, on which we have stable and fixed cooperators for more than 10 years.

All the products supplied by us should be produced strictly according to the standards, such as ASTM A53, GB/T9711, API 5L, GB/3091, ASTM A500 and some other domestic and international standards to satisfy your various requirements, which is widely applied to the industries of construction, steel structure, natural gas, shipbuilding, chemical, boiler and other relative fields, with the capacity of 300, 000MT yearly.

Application:

Widely used in mechanical manufacturing, construction industry, metallurgy industry, agricultural vehicles, agricultural awning, the auto industry, railway, and road guardrail, container skeleton, furniture, decoration and steel structure, etc

About us:

We are specialized in producing both standard and non-standard steel hollow box, including square steel pipe with size from 15*15mm to 600*600mm and rectangular steel pipes with size from 10*15mm to 400*600mm, which can be black steel pipe or galvanized steel pipes. We also do business on H/I/U beam and steel angles for years.

Hebei Shengtian Group Co., Ltd taking the farseeing idea, scientific management, advanced equipment and technique, and good reputation as the fundamental, we strictly carry out quality management system according to ISO9001 international standard to guarantee the best products and services to you.

Chemical components

Mechanical property

C

Si

Mn

P,S

Cu

Ni

Mo

Cr

V

Tensile Strength

Yield Strength

Elongation

ASTM A53

A

≤0.25

/

≤0.92

≤0.05

≤0.06

≤0.40

≤0.15

≤0.40

≤0.08

≥330

≥205

≥29.5

B

≤0.30

/

≤1.2

≤0.05

≤0.06

≤0.40

≤0.15

≤0.40

≤0.08

≥415

≥240

≥29.5

A106: Chemical components and mechanical property

Stan-dard

Trade mark

Chemical components

Mechanical property

C

Si

Mn

P,S

Cu

Ni

Mo

Cr

V

Tensile Strength

Yield Strength

Elongation

ASTM A106

B

≤0.30

≥0.10

0.29-1.06

≤0.035

≤0.40

≤0.40

≤0.15

≤0.40

≤0.08

≥415

≥240

≥30

C

≤0.35

≥0.10

0.29-1.06

≤0.035

≤0.40

≤0.40

≤0.15

≤0.40

≤0.08

≥485

≥275

≥30

PSL 1: Chemical components and mechanical property

Class and Sort		Chemical components				Mechanical property
		C(Max)	Mn(Max)	P(Max)	S(Max)	Tensile Strength(Min)		Yield Strength(Min)
A25	CL I	0.21	0.60	0.030	0.030	45.000	310	25.000	172
	CL II	0.21	0.60	0.030	0.030
A		0.22	0.90	0.030	0.030	48.000	331	30.000	207
B		0.28	1.20	0.030	0.030	60.000	414	35.000	241
X42		0.28	1.30	0.030	0.030	60.000	414	42.000	290
X46		0.28	1.40	0.030	0.030	63.000	434	46.000	317
X52		0.28	1.40	0.030	0.030	66.000	455	52.000	359
X56		0.28	1.40	0.030	0.030	71.000	490	56.000	386
X60		0.28	1.40	0.030	0.030	75.000	517	60.000	414
X65		0.28	1.40	0.030	0.030	77.000	531	65.000	448
X70		0.28	1.40	0.030	0.030	82.000	565	70.000	483

Our catalog of Seamless steel pipe

item	material	standard	specification (OD*WT)mm	usage
alloy pipe	Cr5Mo. 15CrMo 13CrMo44 12Cr1MoV P22 T91,P91,P9, T9 Wb36	GB5310-95 GB9948-88 ASTMA335/A335M ASTMA213/213M DIN17175-79 JISG3467-88 JISG3458-88	16-824*2-100	The seamless steal pipes features resistance to high pressure, high/low temperature and corrosion and is used in the industries of petroleum, chemical engineering and. Electric power as well as boiler
High-pressure boiler pipe	20G ,A106, ST 45	GB5310-95 ASTM A 106-99 DIN17175-79	14-630*2-80	Temperature-resistant seamless steel pipe far high-pressure boiler
Seamless pipes for petroleum	20, 12CrMo, 15CrMo	GB9948-88	10-530*1.5-36	Boiler pipes for refinery, heat-exchanging pipes, seamless steel pipes for pipeline
High-pressure Seamless pipes for fertilizer making equipment	20, 16Mn, Q345	GB6479-2000	18-530*3-40	Fertilizer making equipment and pipe line
Low and medium- pressure boiled pipe	10,20	GB3087-1999	10-530*2-40	Over-heat pipe for low and medium pressure boiler, boiling water pipe, locomotive smoke pipe(big and small)
Fluid pipe	20, Q345	GB/T8163-1999	8-630*1.0-40	Fluid feeding
Structural pipe	20, Q345 10, 20,35,45, 16Mn,Q345B	GB/T8162-1999	6-1020*1.5-100	For common structure
Line pipe	Gr.B	API	60-630*1.5-40	Carrying gas, water or oil in the industries of petroleum and natural gas
Hydraulic prop pipe	27SiMn	GB/T17396-1998	70-377*9-40	Hydraulic support and prop