1) standards:British(BS),American,DIN 2) banded,beaded,plain;Galvanized and black 3)H,HE,HF,HB,GF 4)OEM/ ... ODM malleable iron pipe fittings on the basis of ISO5922, ISO49, ISO71, KSB1531 ... 6". 4)The products are divided into banded, beaded, plain; Galvanized and black. 5)Brands: "STAR" H etc. we also can ...