Weld Neck Flange Products

Ref Price:
Loading Port:
China Main Port
Payment Terms:
TT or LC
Min Order Qty:
5 Tons m.t.
Supply Capability:
1000 Tons per Month m.t./month

OKorder Service Pledge

Quality Product

Order On-line Tracking

Timely Delivery

OKorder Service Pledge

Credit Rating

Credit Services

Credit Purchasing

Share to:

Product Description:

Detailed Product Description

Welding neck forged flange


Send a message to us:

Remaining: 4000 characters

- Self introduction

- Required specifications

- Inquire about price/MOQ

Q:What kind of flanges can the RF face flange pair with?
Just match it
Q:What is called a flange hole?
You can choose the answer to "I love Tieguanyin"!! The last sentence should be "those holes" instead of "that hole"".
Q:What is lined with PTFE stainless steel flanges?
PTFE lined pipe after years of actual use, directly affect the service life and stable performance is temperature, pressure, medium, high quality materials and advanced manufacturing technology is the product quality assurance of PTFE lining. Flange is a large pipe, pipe fittings of a connection, that is, in the connection where there is a wide out of the edge, surrounded by empty, two pieces of flange pairs together, fixed with screws. Stainless steel flanges are made of stainless steel.Lining PTFE pipe anti-corrosion biggest advantage:1., high temperature, {maximum use temperature of 260 degrees.2., strong acid resistance, strong alkali, {pH value between 1~14.3. excellent adhesion, {negative pressure can reach 0.09MPa, vacuum effect.4. long service life {general conditions can be used for 8 to 10 years, the general commitment for 1 years warranty.5., strong penetration resistance, {hydrofluoric acid. Chlorine, bromine, acid and other gases are very good permeability.Requirements for selection of steel pipes and flanges for lined PTFE pipes and fittings1, the national standard pipe seamless steel pipes, due process requirements, the nominal pipe lining inside effective diameter smaller than the pipe diameter, effective flow standard necessary for the designers and users of steel pipe diameter.2, the flange can be based on user needs according to the national standard of HG, GB, JB, ANSI, JIS, BS, DIN etc., can be forged, can also be determined by the contract, because the sealing process suggested the use of welding plate flange, hubbed flange. Is the plane sealing surface of the seal type, in order to facilitate the installation of pipelines, can provide users with flange ring activities.
Q:What is the nominal diameter of a flange? What is the nominal diameter of a pipe?
The nominal diameter of the flange does not mean any flange nominal diameter, but only the specifications of the flange, the specific size should refer to the flange standard! For example, DN100 does not mean that the flange diameter is 100, depending on the flange pressure, the specific size of the standard.Similarly, the nominal diameter of the pipe does not mean the specific size, the specific size should be checked according to the pipe numberIndustrial parameters, plus nominal two, do not refer to exact dimensions, but to a class. The exact size should be checked against the corresponding standard
Q:What is the distance between bolts and holes for fire exhaust duct?
No specific requirements, it seems, preferably not more than 20
Q:Would you please ask if the street light flange is embedded in the foundation? Was it put in when the foundation was built?
The flanges and the road poles are welded together. Here is the cement foundation, with pre embedded bolts in the foundation and bolted flanges when mounted.
Q:What are the factors associated with the leakage of gaskets for pipe flanges and how to improve the sealing performance of gaskets?
The leakage of gasket is one of the performance parameters of the gasket itself. The parameters include gasket structure, environment temperature, pressure, medium and so on.To improve the sealing performance, not only from the point of view of the gasket, the entire flange structure is a whole, if the gasket is determined, you can start with the following points:1, replacement materials, gasket materials, according to different application environment, there are many models can choose2. Increase the torque of the bolt or reduce the contact area between the gasket and flange. In a nutshell, increase the flange pressure and compress the contact clearance3, can also be used in some other ways, such as wiping glue, gasket oil etc.
Q:What flange is the PP flange?
PP flange is made of polypropylene made of flange
Q:The flange diameter is 190 and the inside diameter is 80 inches
How do you calculate the size of the flange?,This is not we can calculate and design, flange design and production is standard. China's standards are mainly petrochemical standards (SH) and the original Ministry of chemical industry standards (HG), in addition to the national standard (GB). In addition, countries have different standards, and a country may have several standards.How many inches do you calculate?The inch should be in inches, inches in size, 2.54 centimeters in =1 inchesThe flange diameter is 190 and the inside diameter is 80 inchesIt's 3 inches.What's the inside diameter or what?Diameter refers to nominal diameter. Nominal diameter can only indicate the size of the pipe and can not indicate the exact size of the pipe.The same nominal diameter of the pipe according to the pressure level, purpose, material, and its internal and external diameter is not the same (this means the same standard).A simple example is to the market to buy our house water, when you go to the market to buy, businesses will say "4" (read: 4) "this is the nominal diameter, then people will ask you to be thick or thin, this is the same nominal diameter under different tube.
Q:What's the meaning of duct flange specification L20*4?
The L20*4 you said should be flange free. The flange height of the air duct shall be referenced to the provisions of the metal flange duct, that is, the flat steel of 20*4
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