... .2. Material: stainless steel,carbon steel,alloy steel 3. Size range: From ½” up to 60” "4. Schedule:SCH ... and certification: ISO9001:2000, API, BV, SGS, LOIYD7. Applications range: "Petroleum, chemical, power, gas, metallurgy, shipbuilding, construction, ... certification:ISO9001:2000 , API , BV , SGS, LOIYDApplications range: Petroleum, chemical, power, gas, metallurgy, shipbuilding.construction,water ...