Weld Neck Plate Flange

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China Main Port
Payment Terms:
TT or LC
Min Order Qty:
1 Ton m.t.
Supply Capability:
800 Tons per Month m.t./month

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Product Description:

Detailed Product Description

size:DN15 to DN2000

Material: carbon & stainless steel

CLASS: 150,300,600,900,1500

Sizes: DN15 to DN2000, 1/2 inch to 78 inch

Standard: ANSI,JIS,DIN,BS4504,SABS1123,EN1092,UNI,GOST12820-80

Types: plate, slip on, welding neck, blind, thread, socket weld flange

Process: free forging, plate cutting, heat treat, machining

Surface Treat: Anti-rust Oil, Paint, Zinc, Hot dipped Galvanized

Packing: plywood cases and pallets or as per customers' requirements

Supply Capacity: 20,000 tons per year

Delivery: usually within one month after receiving the formal order

Inspection: factory in-house self check or Third Party inspection

Carbon Steel:A105,SS400,SF440,RST37.2,S235,C22.8

Stainless Steel:F304,F304L,F316,F316L,316Ti and etc

We can also make flanges according customer’s drawings.

Sincerely welcome your valuable words, please don't hesitate to contact me for flange price.


1.DIN carbon steel flangesMaterial:Rst37.2,St37.2,C22.8)DIN2573 PN6;DIN2576 PN10,DIN2502 PN16,DIN2503 PN25 ,PN40,DIN2566 PN10&PN16,DIN2631 PN6,DIN2632 PN10.DIN2633 PN16,DIN2634 PN25,DIN2635 PN40,DIN2636 PN64,DIN2637 PN100,DIN2638 PN160,

2.ANSI standard Flange,(Material A105,Q235)150LB,300LB,400LB,600LB,900LB,1500LB,2500LB WNRF,WNFF,SORF,SOFF,THRF,SWRF,LJRF flanges

3.JISflanges(SS400,SF440A)5K,10K,16K,20K,30K,40KSOPFF,SOPRF,SOHFF, SOHRF,BLFF,BLRF,WNRF,WNFF flanges

4.Italyflanges(MaterialRst37.2,S235JRG2,A105)UNI2276,UNI2277,UNI2278, UNI6084,UNI6089,UNI6090,UNI2544,UNI2282,UNI6090,UNI6091,UNI6092,UNI6093 flanges

5.EN1092 PN6,PN10,PN16,PN25,PN40,PN64,PN100,PN160;TYPE01,TYPE02,TYPE05,TYPE12,TYPE13 Flanges

6.BS4505,GOST 12820-80,12821-80 flangesTABLE D,TABLE E,TABLE H flanges

All the sizes are from 1/2(DN15) to 48(DN1200)

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Q:650 how big flanges and valves are used in the pipe?
The inner diameter is the nonstandard part of DN650. To be more specific, this is really hard to say. I've also done 550 flanged valves
Q:In the heat treatment, "flange" and "oxidation" there is a difference? Or is it just a different name?
You Baidu these two words?......It's all about the wind, the horses and the cows
Q:76X6 seamless steel tubes with large flanges?
With DN65 neck welding flanges.According to the thickness of the steel pipe pressure, at least use 63kg pressure flange.. WN65-63KGHG/T20595-97 or HG/T20595-2009 implementation standards.As for the sealing surface, you can choose your own,Select the sealing surface can be found inside our company website. There's an introduction. URL is added after my username. COM, or go to my data to find.
Q:PN40 valve flange surface using RF or FM?
PN40 valve flange surface default FM, and if you use RF, you must note.
Q:What are the differences between the clamping and flange styles of valves?
The clamp type is light and self sealing, and the installation is very simple, and the installation and adjustment are easy. More and more pairs of clip valves are used in the middle and low pressure pipelines.
Q:The function of steam turbine cylinder flange and bolt heating device
The partition plate is used to fix the stationary blade and prevent the steam leakage between the stages. It divides the inner part of the turbine into several pressure segments so that the steam can change the potential energy into kinetic energy through the stator cascade, and then flow the steam into the moving vanes in the prescribed direction.The cylinder of the high temperature steam turbine should bear high pressure and temperature, and the tightness of the joint surface of the cylinder must be ensured. Therefore, the flange of the cylinder must be made wide and thick. In this way, the starting of the turbine will bring about a certain difficulty, that is, a larger temperature difference along the width of the flange. If the temperature difference is too large, the thermal stress will cause the cylinder to deform or produce cracks. Generally speaking, the cylinder is easier to heat than the flange, and the heat of the bolt is transmitted to it through the flange, so the bolt is heated more slowly. For the double cylinder unit, outer cylinder heating cylinder is much slower than the outer cylinder, the flange is more slowly, because the flange temperature rises slowly, hampered the cylinder thermal expansion between the rotor and the cylinder caused by excessive expansion, so that the turbine flow gap, friction.
Q:What is the chord distance of the flange?
The center distance between 2 adjacent bolt holes on the flange
Q:Flanges, elbows and other pipe fittings (building materials, pipes, steels) are either, or are, independent of the invoice value added tax
Generally fill in the flange bend directly, you can also fill in the pipe accessories.
Q:What is the flange of the stamping parts? What is the specific surface of the flange mentioned in the stamping die?
The flange is a transliteration of the word "Flange", that is, the flange. In the production of drawing dies, the blank is not fully drawn into the die. This is the flange. In simple terms, the edges of a vertical wall can be called flanges. There are flange connections in machine parts, such as the connection of rural water pump and steel pipe.
Q:What's the advantage of flange bolts?
The flange is the connecting device of two big diameter pipes, usually two flanges and some fastening bolts. Carbon steel flanges are flanges made of carbon steel. Low carbon steel, good plasticity, low strength, after adding a proper amount of carbon elements will become hard, plastic reduced, strength increased.Flanges may be subject to high tensile, compressive, torsional, and shear strength, and carbon steel flanges are preferable. Nominal pressure should be determined not only according to the maximum working pressure, but also according to the maximum operating temperature and material characteristics, not just the nominal pressure but the working pressure.
Our company has strong professional technical force, rich experience, integrated data and advanced equipment, as well as high-quality forging, machine-processing, assembling and packing production lines. Our product quality is in full compliance with both national and international standards, and we have obtained the ISO9001-2000 quality certification. Warmly welcome all to come to visit, investigate and negotiate business.

1. Manufacturer Overview

Location Shandong,China
Year Established 2008
Annual Output Value
Main Markets North America
South America
Eastern Europe
Southeast Asia
Mid East
Eastern Asia
Western Europe
Central America
Northern Europe
Southern Europe
Company Certifications ISO9001:2008

2. Manufacturer Certificates

a) Certification Name  
Validity Period  

3. Manufacturer Capability

a)Trade Capacity  
Nearest Port qingda
Export Percentage 81% - 90%
No.of Employees in Trade Department
Language Spoken: English, Chinese
b)Factory Information  
Factory Size: 10,000-30,000 square meters
No. of Production Lines 10
Contract Manufacturing OEM Service Offered Design Service Offered Buyer Label Offered
Product Price Range Low and/or Average