
As4129/4331/4087 Hot Dipped Galvanised Carbon Steel Backing Ring
Description
Technical Parameters
Adhering to the business philosophy of honesty, we will establish good cooperation with domestic and foreign customers with excellent high density polyethylene hdpe pipe fittings, electrofusion Flange Adaptor, HDPE bend 22 5 and strict business norms. In the new century, our company continues to carry forward the enterprise spirit of 'endless pursuit and all-round improvement', abides by quality first and customer first. The strength of corporate marketing is directly related to the survival and development of the company. We have established a global marketing network platform to serve our customers.
HDPE Fittings, Steel Backup flange, Steel Backing Rings, HDPE backing flange, HDPE backup flange, HDPE slip on flange, GI Backing Rings
HDPE Backup Flange, also called HDPE Backing Flange, are used in conjunction with "HDPE flange adaptor". The steel backup Flange is slipped over the pipe, prior to the stub end being welded on.
The HDPE flange adaptor forms the seal against the nozzle / Valve / flange etc that it is meeting. The HDPE backing flange is free to rotate until such time as it is bolted up.
SUNPLAST HDPE Backup flange can be supplied in diameters ranging from 50mm to 1200mm in PN10 & PN16. They are forged by carbon steel material or stainless steel material, be drilled into EN1092 standard, the HDPE backing flange made by carbon steel can also be coated by PP material or galvanization in surface, to prevent them from rusting.
SUNPLAST keeps mass stock in demand for regular sizes, and customers’ urgent demand & prompt shipment request can be satisfied.
More brief details as below:
Product | HDPE backup flange,Steel Backup flange, Steel Backing Rings, HDPE backing flange, HDPE backup flange, HDPE slip on flange, GI Backing Rings |
Specification | DN50~DN1200mm |
SDR/pressure ratings | PN10 & PN16 |
Material | Carbon Steel or Stainless Steel |
Manufacturing Process | Forged |
Surface finish | Coated by PP material, or galvanization |
Manufacturing Standard | EN1092 standard, customized-made available |
Samples available | Yes, samples are available, but charged. |
Packing method | Wooden cases |
MOQ | Negotiable |
Customized Logo available (OEM Service) | Yes |
Production lead time | HDPE backing rings in EN1092 standard are possible in stock About 10 days for a 20ft container, 20 days for a 40ft container |
Warranty time | 5 years for normal use |
Payment term | T/T, L/C, DP, Western Union, or negotiable |
FOB loading port | Ningbo/Shanghai China |
Place of origin | Ningbo, China |
Product Specifications
Steel Backup Flange: available from DN50mm ~DN1200mm
Pressure: PN10 & PN16
Material: Carbon steel or Stainless steel
Surface Finish: PP coated or galvanization
Standard: EN1092

EN1092 Standard HDPE backing flange - PN10
Size | ΦD | K | Φd | WT | ΦE | n |
50 | 150 | 110 | 55 | 12 | 14 | 4 |
63 | 165 | 125 | 68 | 14 | 18 | 4 |
75 | 185 | 145 | 80 | 14 | 18 | 4 |
90 | 200 | 160 | 95 | 14 | 18 | 8 |
110 | 220 | 180 | 115 | 15 | 18 | 8 |
125 | 250 | 210 | 130 | 15 | 18 | 8 |
140 | 250 | 210 | 145 | 15 | 18 | 8 |
160 | 285 | 240 | 165 | 16 | 22 | 8 |
180 | 285 | 240 | 185 | 16 | 22 | 8 |
200 | 340 | 295 | 205 | 16 | 22 | 8 |
225 | 340 | 295 | 230 | 16 | 22 | 8 |
250 | 395 | 350 | 255 | 18 | 22 | 12 |
280 | 395 | 350 | 285 | 18 | 22 | 12 |
315 | 445 | 400 | 320 | 19 | 22 | 12 |
355 | 505 | 460 | 360 | 20 | 22 | 16 |
400 | 565 | 515 | 408 | 22 | 26 | 16 |
450 | 615 | 565 | 458 | 24 | 26 | 20 |
500 | 670 | 620 | 508 | 26 | 26 | 20 |
560 | 780 | 725 | 568 | 29 | 30 | 20 |
630 | 780 | 725 | 638 | 29 | 30 | 20 |
710 | 895 | 840 | 720 | 37 | 30 | 24 |
800 | 1015 | 950 | 810 | 41 | 33 | 24 |
900 | 1115 | 1050 | 910 | 45 | 33 | 28 |
1000 | 1230 | 1160 | 1010 | 50 | 36 | 28 |
1200 | 1455 | 1380 | 1210 | 58 | 39 | 32 |
(Noted: the technical data is just for reference, some data may change, if you need exact data, then please contact us directly)
EN1092 Standard HDPE backing flange - PN16
Size | ΦD | K | Φd | WT | ΦE | n |
50 | 150 | 110 | 55 | 12 | 14 | 4 |
63 | 165 | 125 | 68 | 14 | 18 | 4 |
75 | 185 | 145 | 80 | 14 | 18 | 4 |
90 | 200 | 160 | 95 | 14 | 18 | 8 |
110 | 220 | 180 | 115 | 15 | 18 | 8 |
125 | 250 | 210 | 130 | 15 | 18 | 8 |
140 | 250 | 210 | 145 | 15 | 18 | 8 |
160 | 285 | 240 | 165 | 16 | 22 | 8 |
180 | 285 | 240 | 185 | 16 | 22 | 8 |
200 | 340 | 295 | 205 | 16 | 22 | 12 |
225 | 340 | 295 | 230 | 16 | 22 | 12 |
250 | 405 | 355 | 255 | 18 | 26 | 12 |
280 | 405 | 355 | 285 | 18 | 26 | 12 |
315 | 460 | 410 | 320 | 19 | 26 | 12 |
355 | 520 | 470 | 360 | 20 | 26 | 16 |
400 | 580 | 525 | 408 | 22 | 30 | 16 |
450 | 640 | 585 | 458 | 24 | 30 | 20 |
500 | 715 | 650 | 508 | 26 | 33 | 20 |
560 | 840 | 770 | 568 | 29 | 36 | 20 |
630 | 840 | 770 | 638 | 29 | 36 | 20 |
(Noted: the technical data is just for reference, some data may change, if you need exact data, then please contact us directly)
Our Product Range
SUNPLAST is a professional manufacturer of HDPE fittings over 20 years in China, and here in SUNPLAST, all customers can find the best solution of fittings for their pipeline systems.
SUNPLAST HDPE butt fusion fittings can be supplied in a diameter ranging from dn50 to dn800mm in both SDR11 & SDR17, with regular types: HDPE end caps, HDPE reducer, HDPE 90 degree elbow, HDPE 45 degree elbow, HDPE 22.5 degree elbow, HDPE equal tee, HDPE reducing tee, HDPE flange adaptor, G.I. backing rings.,etc

Contact Us
If you have any requirements on HDPE fittings, or any question on our fittings, please contact us freely. SUNPLAST has well trained staff who are available to address your needs and provide technical support to all sectors when needed.

Our As4129/4331/4087 Hot Dipped Galvanised Carbon Steel Backing Ring sell well all over the country, and the sales network has begun to take shape. The rapid development of the times and the fierce competition in the market have always spurred us to constantly surpass ourselves. Integrity is the cornerstone of survival, quality is the foundation of development, and win-win is the premise of cooperation.
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