Shan Dong Lu steel Group Co., Ltd is a professional production of Thick wall seamless steel pipe supplier Thick wall seamless steel pipe standard: ASTM, DIN, ISO, EN, JIS, GB, etc. Material: ASTM A106B ASTM A53B API 5L Gr.B ST52 ST37 ST44 Outer diameter: 20mm-1200mm, or as required. Wall thickness: 0.5mm-25mm, or as required. Length: 1m-12m, or as required. Surface: Lightly oiled, hot dip galvanized, electro-galvanized, black, bare, varnish coating/anti-rust oil, protective coating, etc. Package: Standard export package, or as required. Price term: EXW, FOB, CIF, CFR, CNF, etc. Payment: T/T, L/C, Western Union, etc. Export to America, Australia, Brazil, Canada, Peru, Iran, Italy, India, United Kingdom, Arab, etc. The production process of thick-walled seamless steel pipes can be divided into four basic methods: cold drawing, cold rolling, hot rolling, and thermal expansion. Uses are divided into seamless steel pipes for structure; seamless steel pipes for transportation; seamless steel pipes for boilers; high-pressure seamless steel pipes for boilers; high-pressure seamless steel pipes for fertilizer equipment; seamless steel pipes for geological drilling; seamless steel pipes for oil drilling; Seamless steel pipes for petroleum cracking; seamless steel pipes for ships; cold-drawn cold-rolled precision seamless steel pipes; various alloy pipes. Seamless steel pipes are represented by outer diameter and wall thickness. Thick-walled seamless steel pipes are mainly used for mechanical processing, coal mines, hydraulic steel, and many other purposes.