1.Material: stainless steel, carbon steel 2.Size:1/4"--4" 3.Certificate: ISO9001:2008. 4. ... delivery in general17. Business type: Manufacture18. Related products: ball valve, pipe fittings, such as elbow, nut,union, tee, cross, nipple19. Attend ... fair: China Import and Export Exhibition Stainless steel gas pipe union(ISO9001:2008)