... . standard: ANSI,JIS,DIN,GB,BS,EN. 2. size :DN15~DN600 3. Thickness :2.8~100mm 4. Certificate : ISO9001:2000 ,API ... good quality and pretty competitive price. 1. Material ; carbon steel ,alloy steel ,stainless steel . 2. Size: DN15~DN100 3. Wall thickness: SCH10~SCH160,STD ... ,XS,XXS. SGP. 2.8MM~100MM. 4. Standard : BS, GB, ...