Flange Type WN/welding neck flange;SO/slip on flange; PL /Plate flange;BL/Blind fla...

China new steel holding group co., Ltd is one of the largest iron and steel productio...

China new steel holding group co., Ltd is one of the largest iron and steel productio...

China new steel holding group co., Ltd is one of the largest iron and steel productio...

China new steel holding group co., Ltd is one of the largest iron and steel productio...

China new steel holding group co., Ltd is one of the largest iron and steel productio...

China new steel holding group co., Ltd is one of the largest iron and steel productio...

China new steel holding group co., Ltd is one of the largest iron and steel productio...

China new steel holding group co., Ltd is one of the largest iron and steel productio...

China new steel holding group co., Ltd is one of the largest iron and steel productio...

China new steel holding group co., Ltd is one of the largest iron and steel productio...

China new steel holding group co., Ltd is one of the largest iron and steel productio...