steel tube

Our products have passed API 5CT and API 5L certificate of authority and TUV certificate of German. They also passed GB/T19001-2000 national quality c

2013-08-17

JIS3454 seamless steel tube

Our products have passed API 5CT and API 5L certificate of authority and TUV certificate of German. They also passed GB/T19001-2000 national quality c

2013-08-17

steel tubes

Our products have passed API 5CT and API 5L certificate of authority and TUV certificate of German. They also passed GB/T19001-2000 national quality c

2013-08-17

EN10297 seamless steel tube

Our products have passed API 5CT and API 5L certificate of authority and TUV certificate of German. They also passed GB/T19001-2000 national quality c

2013-08-17

EN10216 seamless steel tube

Our products have passed API 5CT and API 5L certificate of authority and TUV certificate of German. They also passed GB/T19001-2000 national quality c

2013-08-17

DIN17175 seamless steel tube

Our products have passed API 5CT and API 5L certificate of authority and TUV certificate of German. They also passed GB/T19001-2000 national quality c

2013-08-17

ASTM A519 seamless steel tube

Our products have passed API 5CT and API 5L certificate of authority and TUV certificate of German. They also passed GB/T19001-2000 national quality c

2013-08-17

ASTM A192 seamless steel tube

Our products have passed API 5CT and API 5L certificate of authority and TUV certificate of German. They also passed GB/T19001-2000 national quality c

2013-08-17

seamless steel

Our products have passed API 5CT and API 5L certificate of authority and TUV certificate of German. They also passed GB/T19001-2000 national quality c

2013-08-17

API 5L seamless steel tube

Our products have passed API 5CT and API 5L certificate of authority and TUV certificate of German. They also passed GB/T19001-2000 national quality c

2013-08-17

seamless steel tube

Our products have passed API 5CT and API 5L certificate of authority and TUV certificate of German. They also passed GB/T19001-2000 national quality c

2013-08-17

ASTM A106 seamless steel tube

Our products have passed API 5CT and API 5L certificate of authority and TUV certificate of German. They also passed GB/T19001-2000 national quality c

2013-08-17