Figure402,black nuts and connecting parts are used.

Only the 2〞type is available-with nitrile-butadiene rubber seal ring.

Figure 602

With resilient nitrile-butadiene rubber seal ring,this figure is used for sealing

and protecting the steel-to-steel match.

It is recommended for the connection of manifold and pipe and truck-mounted applicatiom

 and mud delivery.It may be used as pressureless seal union with butt weld Sch.80.

Figure 1502

It is equipped with replaceable flexible NBR seal ring,and sturdy wall thickness is designed

for high-pressure system.

It is recommended for cementing,fracturing,acidizing,testing,and blocking well pipeline,can also

be used for non-pressure sealed connection.It may be used as pressure seal union with butt weld Sch.XXH.