Round Steel Pipe DIN2391 DIN2445 St37.4 High Precision Seamless Steel Tubes

Chemical Component

C: ≤0.17%;

Si: ≤0.35%;

Mn: ≤1.2%;

S: ≤0.025%;

P: ≤0.025%;

Mechanical properties:

Tensile strength: 340-480mpa;

Yield strength: ≥235Mpa;

Elongation: ＞25%;

Main Date

Surface treatment:

Oil-dip;

Varnish;

Shot Blasting;

As customer's requirements.

lab:

We have our own lab to control the material and the product meet the international standard.

Jiangsu Hongbao Group (Pipe) Co., Ltd. (Zhangjiagang Hongda Pipe Co., Ltd.) is a high-tech company in Jiangsu province. The company has a registered capital of RMB 89 million, covers an area of 130,000 square meters, employs 600 staff, and has annual sales of RMB 400 million. The company is specialized in producing and selling high-end bearing tubes, auto alloy tubes, titanium and titanium alloy tubes, nickel and nickel-based alloy tubes, refrigerator condenser tubes, aluminum and aluminum alloy tubes and the like.
The company focuses on the development of new products, and has successively developed high diameter-wall ratio titanium-molybdenum-nickel alloy seamless steel tubes, nuclear power plant reactor driving mechanism used martensite stainless steel seamless steel tubes, auto critical components used alloy steel tubes, high-end refrigerator used corrosion-resistance galvanized condenser tubes, marine engineering and complex environment oilfield used high-strength corrosion-resistance G3 tubes, among which, nuclear power plant reactor driving mechanism used martensite stainless steel seamless steel tube has obtained high-tech product certificate of the province.
At present, the company has obtained authorization for 7 patents for invention, and 8 patents for utility model.