Brief:Standards: DIN934 ASME/ANSI B 18.2.1 DIN555 ISO4032 Min Order: 1000PCS each size Sample: Free sample Certificate: ISO 9001: 2015 Application: Machinery,Chemical Industry, Environmental,Building Package: 25kg/Cartons+900kg/Pallets, 36 Cartons/Pallets or according to the customer's requirements