St37 St42 Cold Rolled Seamless Steel Tube 1-200mm Carbon Round

Length: 1-6m

Trade terms: FOB/CFR/CIF

Shipping port: Qingdao Tianjin

Shipment:  1) Small diameter: Weight >Measurement
                       a. Length: ≤5.8m, loaded in 20FT Container, Max 27-28tons
                       b. Length: ≤11.8m, loaded in 40 FT Container, Max 27-28tons
                       c. Length: ≥12m, shipped by bulk vessel. FILO terms
                   2) Big dimater: Weight a. Size of 20 FT Container(inside :5898*2352*2350mm)(12024*2352*2395mm)

Delivery time: Normal size: 7days send from warehouse directly. Special size: 25-30days custom made for you.

Application

1. Pipes for pipes.

Such as: seamless pipes for water, gas pipes, steam pipes, oil pipelines, and pipes for oil and natural gas trunk lines. Agricultural irrigation faucets with pipes and sprinkler irrigation pipes, etc.

2. Tubes for thermal equipment.

Such as boiling water pipes, superheated steam pipes for general boilers, superheating pipes, large smoke pipes, small smoke pipes, arch brick pipes and high temperature and high pressure boiler pipes for locomotive boilers.

3. Pipes for machinery industry.

Such as aviation structural pipes (round pipes, elliptical pipes, flat elliptical pipes), automobile semi-axle pipes, axle pipes, automobile tractor structural pipes, tractor oil cooler pipes, agricultural machinery square pipes and rectangular pipes, transformer pipes and bearings tube etc.

Cold-rolled  seamless steel pipes include carbon thin-walled steel pipes, alloy thin-walled steel pipes, and stainless steel thin-walled steel pipes in addition to general steel pipes, low and medium pressure boiler steel pipes, high-pressure boiler steel pipes, alloy steel pipes, stainless steel pipes, and oil cracking pipes. Steel pipe, special-shaped steel pipe.

Seamless steel pipes are generally made by hot rolling or cold rolling of high quality carbon-bonded steel 16Mn, 5MnV or alloy steel 40Cr, 30CrMnSi, 45Mn2 and 40MnB. Seamless pipes made of low carbon steel such as 10 and 20 are mainly used for fluid transmission pipelines. Seamless tubes made of medium carbon steel, such as 45, 40Cr, are used to manufacture mechanical parts,such as stress parts of automobiles and tractors.Hot-rolled seamless steel pipes are divided into general steel pipes, low and medium pressure boiler pipes, high pressure boiler pipes, alloy steel pipes, stainless steel pipes, petroleum cracking pipes, geological steel pipes and other steel pipes.