... 950mm; 2. Thickness:3-60mm; 3. Length: 3-12m 4. Standard: ASTM, API , JIS, DIN, BS, GB . Normal Out ... Normal Wall Thickness:3mm-60mm3. Normal Length:3m-12m4. Producing Standard:American ASTM, API 5L, API 5CT, Japanese JIS, German ... :ISO9001-2000, ISO14000, ISO18000, API 5L certificate11. Picturesour producing flow chart, our factory, production line, inspecting equipments, our products are listed ...