STP valve is one of the biggest Fully Welded Ball Valves manufacturers inChina. Fully welded ball valvesare integral type welded ball valves, they are used for the oil and gas transportation pipelines, it is a critical parts of the long distance transmission pipelines. The oil and gas are flammable and explosive materials, if they are leak, there is not only the energy wasted, but also the environment will be polluted. The flammable and explosive materials may even bring some hidden hazards and trigger some potential accidents. Thus, the fully welded ball valves are used in such pipeline system because of its leakage-proof and safety. Then it alsocan be quickly and accurately opened and closed.

Besides, our fully welded ball valves could be directly buried in the ground, do not need to build high large valve Wells, only set small shallow Wells on the ground, greatly saving construction costs and engineering time.

Industry Standards: Designed, manufactured and tested according to API 6D, ASME B 16.34, E.D. 2014/68/EU (PED), ISO14313. NACE MR 01-75 / MR 01-03, API 6FA; API 607; ISO 10497.

The Sizes range could be from DN 2 inch to 60inch(DN50~DN1500).

Pressure Rating: ASME CLASS 150~2500(PN16~PN420),

The valve body material could be Carbon steel, Stainless steel, Alloy steel, Duplex stainless steel, exotic alloy etc.

End connection could be Flanged, Butt-welding, Hub etc.

Actuation method could be Manual, Pneumatic, Electric, Hydraulicetc.

Fully Welded Ball Valve

Flanged Fully Welded Ball Valve

Section Drawing Fully Welded Ball Valve