(1) ERW Casing:

       Specs: 4 1/2", 5", 5 1/2", 7", 9 5/8", 10 3/4", 13 3/8"

       Steel Grade: J55,K55,N80,P110

       Standards: API SPEC 5CT,  SY/T6194-2003

       Uses:Petroleum and natural gas production engineering

(2)Structural Pipe:

     Specs: 4 1/2", 5 1/2", 6 5/8", 7", 8 5/8", 9 5/8",10 3/4",12 3/4",14"

     Steel Grade:Q195,Q215,Q235

     Standards:GB/T13793-1992

     Uses: used in all kinds of structural parts, spare parts and pipelines transporting fluids

(3)Carrier Line:

     Specs: 4 1/2", 5 9/16", 6 5/8", 8 5/8",10 3/4", 12 3/4", 14"

     Steel Grade: A,B, X42,X46,X52,X56,X60,X65,X70,X80

     Standards: API SPEC 5L,  GB/T9711

     Uses: used to transport natural gas, crude oil, refined oil, water,coal slurry, mineral fines, etc. through the pipelines.

ERW adopts the first production line in China which is able to manufacture N80 grade steel casing, by introducing the rolling mill and flying cut-off saw of Nakata Mfg.Co.,Ltd (Japan), hi-frequency welder and heat treatment equipment of Thermatool Co.,Ltd. (USA). The rolling mill adopts the most advanced FF-X forming technology in the world,which the perfect universal usage of rollers, easy to operate, low operation cost and the location therefore can be precisely digital-controlled to ensure the stsbility and precision of forming and thereafter the products with excellent quality.