http://www.ec21.com/ec-market/seamless api.html http://ritia.en.ec21.com/API_5L_Pipe_Butt_Welded--2971666_2974353.htmlseamless steel pipes with standard of API 5L---2000, DIN, JIS and so on, Application: Seamless steel pipes for low 20091225 http://honrysuri.en.ec21.com/API_5L_20_Seamless_Steel--3848002_3906107.htmlAPI ,ANSI ,GB, SH,HG, MSS,JIS,DIN Material ASTM A106 GRB/ A53 GRB/ API 5L GRB/ API 5 CT /Q345/A335/ST37/ST52 Packagi20091119 http://happly123.en.ec21.com/Sell_API_5L_Seamless_Steel--3485203_3486887.html Executive Standard : API Spec 5CT (ISO 11960:2004) CASING AND TUBING :API (American Petroleum Institute) Product part20091228 http://yong2788.en.ec21.com/Seamless_Steel_Pipes_Tubes_ASTM--3300395_3300396.html Seamless steel pipe for general GB/T8162: 10#, 20#, 35#, 45#, Q345A, Q345B, Q345C, Q345D, Q345E, DIN 1629: St37.0, St20091228 http://sdytsteel.en.ec21.com/Seamless_Line_Pipe_API_5L--1834126_2203183.html Specfication: API SPEC 5L PSL1 PSL2 Grade: B, X42, X46, X52, X53, X60, X65, X70 Size: From 1/4" to 28", OD from 13. 20091224 http://steel0535.en.ec21.com/Galvanized_Seamless_Steel_Pipe_ASTM--2124773_2473169.html Specification: ASTM A106/A53/API 5L GR.B Size: from 1/4" to 28", OD from 13.7 mm to 711.2 mm Wall Thickness From 1 m20091223 http://maggie0535.en.ec21.com/Sell_Seamless_Steel_Pipe_API--2282513_2284776.html Specification: API SPEC 5L Size: from 1/4" to 28", OD from 13.7 mm to 711.2 mm Wall Thickness From 1 mm to 80 mm Sc20091222 http://echosteelpipes.en.ec21.com/Steel_Seamless_Pipe_Iron_Pipe--3737209_3808474.htmlseamless pipe Size: 1/2"-24" Wall thickness: Sch5-Sch160XXS Standard : ASME B36.10M1996 ,API ,ANSI ,GB,SH,HG, MSS,JI20091221 http://tiankun1986.en.ec21.com/Api_5l_Seamless_Steel_Pipes--3842652_3852746.html Api 5l Seamless Steel Pipes Our company manufactures steel pipe of API 5L ASTM A106/ASTM A53 GR.B from 1/4 to 24 accor20091215 http://steelmakerzhu.en.ec21.com/Sell_ASTM_A53_JIS_API--3723163_3873203.htmlSeamless Pipe (1)Size: Diameter:1/8''-36'' Thickness: SCH20-SCH160 (2)Standard: DIN, JIS, ASTM, ISO (3)Quality: A20091215 http://hebeisteelpipe168.en.ec21.com/API_5L_Seamless_Line_Steel--3563577_3563613.html Carbon Seamless Steel Pipe (ASTM A106/A53/API 5L GR. 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