Changshu Longteng Special Steel Co., Ltd.
LONGTENG WELDING CONSUMABLES WELDING THE GLOBAL
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Description
Welding Neck Flanges are easy to recognize at the long tapered hub, that goes gradually over to the wall thickness from a pipe or fitting.
The long tapered hub provides an important reinforcement for use in several applications involving high pressure, sub-zero and / or elevated temperatures. The smooth transition from flange thickness to pipe or fitting wall thickness effected by the taper is extremely beneficial, under conditions of repeated bending, caused by line expansion or other variable forces.
These flanges are bored to match the inside diameter of the mating pipe or fitting so there will be no restriction of product flow. This prevents turbulence at the joint and reduces erosion. They also provide excellent stress distribution through the tapered hub and are easily radiographed for flaw detection.
This flange type will be welded to a pipe or fitting with a single full penetration, V weld (Buttweld).
Product Parameter:
| Standard: | ANSI B16.5,HG/T 20592, HG/T20615-2009, EN1092-1, DIN2502 DIN2527 DIN2566 DIN2573 DIN2576 DIN2632 DIN2633, GOST,etc. |
| Material: | A105/C22.8/Q235/Q355B / P250GH 304/304L,316/316L,321,ect. |
| Types: | welding neck, socket welding, threaded, blind, slip on, lap joint, plate |
| Size: | NPS 1/2" to 24"/DN15-600 |
| Pressure Rating: | Class 150-Class 2500 (150#, 300#, 600#,900#,1500#, 2500#),PN6-PN16 |
| Facing: | RF/FF/RTJ |
| Surface treatment: | Antirust Oil,Black Paint,Yellow paint,Galvanized |
| Certification: | ISO9001:2015/C |
Leadtime:
| Quantity(pieces) | 1,000 - 10,000 | >10,000 |
| Lead time (days) | 20-30 | To be negotiated |