... -50mm; 3. Length: 3-12m 4. Standard: ASTM, AP Carbon Seamless Steel pipeSpecifications 1.Out diameter: 13 ... 25-50mm; 3. Length: 3-12m 4. Standard: ASTM, API 5L/5CT, JIS, DIN, BS, GB/T ... :3m-12m4. Producing Standard:American ASME B36.10M, ASTM, API 5L, API 5CT Japanese JISGerman DINChinese GBBS ... standard5. Main Material:(Carbon Steel & Low Alloy steel)ASTM A53, A106, A210, A252, A333 etc; X42, X46 ...