erw steel tube

Oil, chemical electric power, boiler industry and thermostability, thermal endurance, corrosion resisting.

Our company is specialized in making three kinds of stainless steel pipe, which are fluid pipes, boiler pipes and mirror pipes.

Tianjin Sanjuyuan Trade Co., Ltd is a famous trading company which specializes in high quality seamless steel tubes/pipes and many kinds of alloy pipe

High accuracy(+/-0.05mm)
Excellent surface condition(Ra<=1.0um)
ASTM A519 seamless carbon 1010
NBK seamless steel tube

LDD series:
The LDD steel tube making mill have two production lines of Multi-Rollers,
provide double production efficiency than normal machines

Maximum carbon content of 0.03 316L stainless steel, can be used for welding cannot carry out annealing and in applications requiring maximum corrosi

Specifications1.Payment:T/T, L/C
2.mini order: 25 ton
3.FOB price: 700 USD/Ton to 890 USD/TON
4.Meterial: Q195 Q215 Q235 Q345

1)Thickness:0.9-12mm
2)OD:6-219mm
3)Application:Fluid
4)Length: 1-12m
5)Certification:ISO9001: 2000

JIS 3463 Stainless steel tube
1.W.T.10-50mm
2.O.D.130-420mm
3.Application Boiler pipe

carbon galvanized steel pipe
1.OD:15*15-400*400mm
2.W.T.: 0.7--14mm
3.Length: 2--12M
4.Zinc coating:240-400g/m2

The Roundness is very accurate;
The inner angle and outer angle of square tubes are both sharp 90°;
Our raw materials are all from the largest ste

1.ideal elongation and strength
2.suitable for bending
3.bearing all types of pressure
4.mirrorlike surface
steel tube cold drawn in oil

Standard: ASTM A513
Application: For machinery, mechanical engineer
Size(mm): O. D.: 6.0-168.0 W. T.: 1.0-15.0mm L: Max 12000mm

Due to the surface of stainless steel with a durable and almost no need to maintain both of these characteristics and prompted more ever more emphasi

seamless welded lsteel pipe
line pipe for conveying gas, water, and oil
API 5L Certificate
Petroleum industry
large amount of stock

Specifications1.Payment:T/T, L/C
2.mini order: 25 ton
3.FOB price: 700 USD/Ton to 800 USD/TON
4.Meterial: Q195 Q215 Q235 Q345

1) Thickness : 0.5-6.0mm
2) Application : Structure pipe
3) Technique : Hot rolled
4) Special pipe : Thick wall pipe
5) Certification : CE

The inner angle and outer angle of square tubes are both sharp 90°;
Our raw materials are all from the largest steel factories in China and are of

seamless steel tube for liquid delivery
non-oxidation heat treatment
surface is smooth, no scales, light oiled
BV SGS approval

By dry properties of stainless steel can be very soft, make it right may be used as a roof covering material. It is because of this material easily

Standard: ASTM A210(ASME SA210)
Application: For manufacturing wall panel, economizer, superheater and steam pipeline of boilers

1.O.D:114MM-610MM
2.W.T:4MM-40MM
3.LENGTH:5M-12M
4.SURFACE:BLACK VARNISH OR ZINC COATING
5.STANDARD&MATERIAL:ASTM A106/A53 GR.B,API 5L GR.B

seamless welded lsteel pipe
line pipe for conveying gas, water, and oil
API 5L Certificate
Petroleum industry
large amount of stock

1) Thickness :3-50mm
2) OD ; 13-1210mm
3) Application: Structure pipe
4) Special pipe : API pipe
5) Certification : ISO9001:2000

1.Size:(1).O.D.:1/4"~4"(6.35MM~101.6MM),(2).Thickness: BWG20~BWG10 (0.889MM~3.403MM)
2.Material:TP304/304L, TP316/TP316L, TP310S, TP321, TP321H, T

1. high precision(+/-0.05mm both on OD and ID),
2. good surface(Ra<1.0um)
3. No crack after flaring and flattening Steel Tube

Ocean tug boat and other vessel propulsion can be made of cast stainless steel CF-8 ( very dry type 304 stainless steel ) is made.

1.Material:10#/20#,GB3087/GB5310,A106B.A53B,
2.OD:1/4"-14"
3.WT:SCH40-SCH160
4.API5L,API5CT

seamless welded lsteel pipe
line pipe for conveying gas, water, and oil
API 5L Certificate
Petroleum industry
large amount of stock

ASTM/ AISI/ SAE 4130 (30CrMo)
Size(mm): O. D.: 6.0~76.0 W. T.: 1~12 L: Max 9000