... ISO9001 QUALITY SYSTEM CASTING stainless steel hexagon head cap1.size range :1/8"-4"2.pressure:150LB3.material:304(304L),316(316L ... , SH, HG, QOST, ETC. 7.certificate: ISO9001 Quality System8.products range:stainless steel elbow,tee,crosses,nut,plug,nipple, cap,bushing ...