Spiral Steel pipe 1.HSAW/Spiral steel pipes 2.OD:219.1--3048mm ... .StandardSY/T5037,SY/T5040,ASTMA252,EN10217,EN10219,GB/T9711.1,API 5L3.Outer Diameter219.1—3048 mm or 8inch—120inch4.Wall ... , South Africa, Spain, Italy, France, England, Belgium, etc13.CertificatesAPI 5L , API 5CT, ISO ,CE