Seamless pipe Seamless pipe: Size: ++10mm-++630mm Material: 10# - 45# q345 a, b, c, d 27simn 40cr 40crmn 20crmn 30mn Executive standard: gb8162 (structural pipe) gb8163 (fluid pipe) gb3087-99 (boiler pipe) gb5310-95 ( boiler pipe for high pressure) gb6479-2000 (fertilizer special pipe) gb9948-88 (petroleum cracked pipe )
