... . Thickness:3-60mm; 3. Length: 3-12m 4. Standard: ASTM, API , JIS, DIN, BS, GB . Normal Out Diameter:6-950mm 2. Normal ... Wall Thickness:3mm-60mm3. Normal Length:3m-12m4. Producing Standard:American ASTM ... , API 5L, API 5CT, Japanese JIS, German DIN, Chinese GB/T, BS standard5. Main Material ...