API 5L ssaw L Welded Steel Pipe,line pipe We have 5 spiral submerged arc welded steel pipe production lines, which use leading facilities such as Lincoln automatic submerged-arc solder,on-line digital ultransonic flaw detector,hydraulic compression testing machine,x-radiation real time imagery,computer control universal testing machine and Charpy impact tester,to guarantee the product quality.Because of the strict quality control system,all of our product have passed the test of certification accreditation administration of petroleum materials of the Peoples Republic of china. Specifications Throughput: 400,000 MT Outside Diameter : 219-2200mm Wall Thickness : 6-20mm Ouality Standards : APIBSASTM JISDINGB ISODNV Length : 8-12.2m Grades : API 5L A,B,X42-X80 PSL1/PSL2 etc