... ISO9001 quality system silicasol shell technology casting stainless steel round cap1.size range :1/8"-4"2.pressure:150LB3.material: ... , QOST, ETC. 7.certificate: ISO9001 Quality System8.products range:stainless steel elbow,tee,crosses,nut,plug,nipple, cap,bushing. Unions.ball ... -year historyWe are at your service at any time! stainless steel round cap