1.size:114.30*5.21-8.56mm ,etc 2.standard:DIN,JIS,GB,BS. 3.stable quality 4.competitive price We own the eight profession engineers of high strength steel wire,and five QC to keep the products good quality so that in overseas marketing,we have been getting good reputation for 10 years ,next we introduce the products as follows:1.oil casing pipe2.size:outside diameter*wall thickness114.30*5.21-8. ...