forged steel BS 3293 welding neck flanges

Welcome to Shijiazhuang Baoguan Pipe Fitting Co Ltd(BG BEST) 

Information about us :

—Factory located in the South of Yanshan City -- production base of pipe fittings in China .

—Almost 30 years experience in pipe fitting field .(from 1982 ) .

—10 assembly lines ,output is 6,000,000tons per year .

 Honor Products

If you talk about 347H,Yinkang Nickel800,Ti,Zr,Special Steel Fittings. X52,X72 Steel Grade’s Big Diameter Elbow,Tee,Bend,P91, P92 Bend  what  we  produce  have  obtained  the  National Scientific and Technical Award . The X70 big diameter Tee has applied the patent which has proprietary intellectual property rights in China ,fill the technical blank inland, become the successful supplier of West-East natural gas transmission. And it gain the title of honour which stands for customer be confident with our products.

Production equipments

We have advanced productive equipments ,such as Φ 1524 pipe bender ,3000T oil press , Φ530 elbow air impact machine, Φ325 tee air extrusion equipment ,fully automatic welding machine ,16mx5.2mx4.5m gas heat treatment furnance . The 1600T extra large elbow pushing machine researched and developed by the company leading the first in China ,it could produce carbon steel , stainless steel and alloy steel high pressure ,medium pressure and low pressure couplings .

Implement strict quality testing

Complete inspection  fountion, consists  of  Radiographic  Inspection  , Magnetic Particle,Ultrasonic Flaw Detection,Metallographic Anglysis,Chemistry Experiement,Mechanical Capacity,Impact Hydrostatic Test,Spectral Direct  

100% UT (Ultrasonic Testing) for each flange.

Welcome to visit our website:

(Our factory can customize products in special specifications; also can process with the material offered by customers.)

Anything I can help,please feel free to contact me.

skype:aliceleepipefitting   Mob:+86  15127157211

--Product show

 flange workshop

  -- Chemical composition test

 --Flange package

German clients to our factory inspection products

related products

Weld Neck Flange

A Weld Neck Flange is drilled with the wall thickness of the Flange having equal dimensions to the matching pipe. The lighter the pipe is the larger the bore is in the Weld Neck Flange. And conversely the heavier the pipe is the smaller the bore is in the Weld Neck Flange. Weld Neck Flanges are usually used in high pressure systems and are suitable for cold or hot temperatures.

Blind Flange

A Blind Flange is a Flange which has no bore hole and consequently it is used to close the end of a piping system. The Blind Flange is sometimes machined to accept a pipe of the nominal size to which reduction is being made. The Blind Flange reduction can be either threaded or welded. A Blind Flange also allows easy access to a line once it has been sealed.

Socket Weld Flange

A Socket Weld Flange is similar to a Slip On Flange, however Socket Weld Flanges have an internal recess on the inside diameter to allow for a smoother flow of the process fluid.

This creates a smooth bore with the proper welding and grinding. However a Socket Weld Flange can be more expensive than a Slip On Flange due to the more intricate machining. Socket Weld Flanges were initially developed for use on smaller sizes of pipe at higher pressure ratings.

Spectacle Blind Flange

A Spectacle Blind Flange allows you to be absolutely sure that an item of equipment is properly and securely blanked off with no possibility of any flow or leakage through a valve during maintenance.

The flow can be diverted to other items of equipment but not just bypassed around the blank as this would compromise the safety function of the Spectacle Blind. The flow has to valve off and pressure relieved prior to loosening Flange bolts and swinging the blind.

 --Certification (API,CE,ISO,PED)