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hebeihaihao

Hebei haihao high pressure flange & pipe fitting group was established in 1982, located in Mengcun County the hometown of pipe fittings in China.


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BS 1640 steel butt welding pipe fittings for the petroleum industry


DIN EN 10253-1 Butt-welding pipe fittings – Part 1: Wrought carbon steel for general use and without specific inspection requirements

The document specifies requirements for steel butt-welding fittings, namely elbows and return bends, concentric reducers, equal and reducing tees, dished and caps.

DIN EN 10253-2 Butt-welding pipe fittings – Part 2: Non alloy and ferritic alloy steels with specific inspection requirements; German version EN 10253-2.

This European Standard specifies in two parts the technical delivery conditions for steel butt welding pipe fittings (elbows, return bends, concentric and eccentric reducers, equal and reducing tees, and caps) which are intended for pressure purposes and for the transmission and distribution of fluids and gases.

The part 1 covers fittings of unalloyed steels without specific inspection requirements. The part 2 covers fittings with specific inspection requirements and offers two ways for determining the resistance to internal pressure of the fitting.

DIN EN 10253-3 Butt-welding pipe fittings – Part 3: Wrought austenitic and austenitic-ferritic (duplex) stainless steels without specific inspection requirements; German version EN 10253-3

This part of EN 10253 specifies the technical delivery requirements for seamless and welded butt-welding fittings made of austenitic and austenitic-ferritic (duplex) stainless steels and delivered without specific inspection.

DIN EN 10253-4 Butt-welding pipe fittings – Part 4: Wrought austenitic and austenitic-ferritic (duplex) stainless steels with specific inspection requirements; German version EN 10253-4

This European Standard specifies the technical delivery requirements for seamless and welded butt-welding fittings (elbows, concentric and eccentric reducers, equal and reducing tees, caps) made of austenitic and austenitic-ferritic (duplex) stainless steel which are intended for pressure and corrosion resisting purposes at room temperature, at low temperature or at elevated temperatures. It specifies: the type of fittings, the steel grades, the mechanical properties, the dimensions and tolerances, the requirements for inspection and testing, the inspection documents, the marking, the handling and packaging.

BS 1640 Stainless Steel Butt Weld Pipe Fittings

BS 1640 Stainless Steel Butt Weld Pipe Fittings

Bw 45 Deg Lr Elbow | Bw 90 Deg Lr Elbow | Bw 180 Deg Lr Elbow | Bw 45 Deg Sr Elbow | Bw 90 Deg Sr Elbow | Bw 180 Deg Sr Elbow | Bw 90 Deg Lr Tangent Elbow | Bw Equal Tee | Bw Reducing Tee | Bw Concentric Reducer | Bw Eccentric Reducer | Bw Cap | Stub End

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