27-10-20 1 Hits

Welded flanged pipes are made by heat-shrinkage method using KK9 pipe up to 6.0m length. All flange pipe are normally lined with cement mortar and has outside zinc and bitumen coating.Screwed flanged pipe are also available.
Product information:
Name: DCI pipe double flange pipe
Standard: ISO 2531, EN545, EN598,
Joint: Flanged,
Flange: EN1092-2 PN10/PN16/PN25
Bolts and nuts: Hot dip galvanized, Grade 4.8/8.8, or stainless steel
Thickness: K9/K12
Internal coating: cement mortar lining according to ISO4179, Or fusion bonded epoxy coating.
Outside coating: (200g/m2)zinc coating, plus bitumen coating(70um) according to ISO8179. Or fusion bonded epoxy coating.
Size: DN80-DN2600mm;
Color: black, red, gray or others
Material: ductile iron
Tensile strength: 鈮?20N/mm2
Yield strength: 鈮?00N/mm2
Elongation: 鈮?0
Hardness: 鈮?30HB
Rubber gaskets: SBR/EPDM according to ISO4633;
Inspection: SGS, BV, TUV, Lliyd鈥檚
Delivery: In container;
Process for welding flanged pipes
1. Prepare the number of straight pipes according to the plan, check the wall thickness, size, appearance and lining of the straight pipes.
2. Scribing and cutting the straight pipes according to the length required in the production plan, then machining the outer diameter and end face of the straight pipe spigot. To make sure that the outer diameter of the straight pipe matches the inner diameter of the welding flange, within the tolerance range.
3. Preheat the base material, then assemble the flange to the outer diameter of the straight pipe, check the length after completion, and then verify the verticality of the flange.
4. Use the AC and DC welding machine, adjust the current and voltage according to the electrode using, and then perform welding. The welding seam must be dense and smooth, and it must be fully fused with the base material with a smooth transition. In case of any defects, such as cracks, undercuts, blowholes, pinch, unfused, etc., the bead must be ground away and re-welded.
5. After welding is completed, the weld area should be cleaned with an angle grinder, and do the tightness test, finally do internal and external anti corrosive treatment(repair cement lining and outer coating).
Packing & ShippingDCI Pipes suppliers

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