Measure the flange
Butt Welding Flange-JIS Flange
The core function of the welding neck flange is to improve the strength and tightness of pipe connections via its neck structure. It is especially suitable for severe working conditions with high temperature, high pressure and drastic cyclic loading.
Description
- 产品描述
-
The core function of the welding neck flange is to improve the strength and tightness of pipe connections via its neck structure. It is especially suitable for severe working conditions with high temperature, high pressure and drastic cyclic loading.
Core Functions and Advantages
The welding neck flange (WN flange) serves as a critical connection component in industrial piping systems. Its main functions are reflected in the following three aspects:
Enhanced connection strength: The unique “neck‑type” design enlarges the welding contact area between the flange and the pipe, forming a sound mechanical joint. Compared with ordinary plain flanges, it can better resist stresses induced by pressure fluctuation, vibration and temperature variation, and prevent fracture or deformation at joints.
Improved sealing performance: The neck structure enables tighter welding joints with the pipe, significantly lowering leakage risks. Under high‑temperature and high‑pressure conditions, this design ensures consistent and reliable sealing performance and avoids safety accidents caused by medium leakage.
Suitability for harsh service conditions: Usually manufactured from premium stainless steel grades such as 304 and 316L, it delivers excellent corrosion resistance, oxidation resistance, and high‑low temperature resistance. Therefore, it is the preferred component for transporting corrosive media or high‑temperature steam in petroleum, chemical, power generation, shipbuilding and other industries.
Main Application Scenarios
Thanks to its high reliability, welding neck flanges are widely adopted in fields with stringent safety requirements:
Energy and chemical industry: Long‑distance oil & gas transmission pipelines, refining installations, offshore platforms and conventional islands of nuclear power plants.
High‑end manufacturing: Ultra‑pure medium transportation for semiconductors, sanitary piping for biopharmaceuticals, and ultra‑supercritical thermal power units.
Ocean engineering: Seawater desalination systems and subsea pipelines that require resistance to heavily corrosive environments.
When selecting this type of flange, it is recommended to place high priority on the manufacturer’s production and inspection capabilities (e.g. coverage rate of non‑destructive testing) and material compliance (e.g. ASTM A182 standard), so as to guarantee long‑term safe operation of the piping system.Manufacturing Process For Flanges
Product Testing
Inspect the bolt holes.
Measure flange thickness
Measure the flange
Measure the flange
Forged flange
Product Packaging
Product Display
FAQs
How do you guarantee product quality and enterprise operation management?
We implement scientific and efficient informatized management mode with ERP management software covering finance, production, procurement, transportation and other links. Meanwhile, we continuously upgrade production equipment and strictly abide by international standard management systems to stabilize product quality and improve comprehensive service capability.
Can you provide integrated pipeline design and construction services?
Yes. Beyond single pipe fitting production, we provide supporting prefabricated pipeline design and construction services, delivering integrated pipeline engineering solutions for various industrial projects.
What production equipment do you adopt for pipe fitting manufacturing?
We are equipped with more than 100 sets of professional production equipment, including elbow pushing machines, three-way cold drawing machines, reducing pipe hydraulic machines, hot bending machines, flange lathes, automatic longitudinal seam welding machines, anti-corrosion and temperature protection machines and other supporting equipment, ensuring high-precision and high-efficiency production.
What is the maximum specification of your high-pressure and seamless pipe fittings?
We are equipped with advanced large-scale production equipment. Our newly upgraded double bend pressing machines can produce high-pressure elbows with DN1000 and 80mm wall thickness, and the new seamless elbow pushing machine expands the production range of seamless elbows up to DN1000mm.
What is your annual production capacity of pipe fittings?
Our company has strong technical and production capacity, with an annual pipe fitting production capacity of 36,000 tons, which can fully meet large-scale, bulk and long-term order demands from domestic and foreign customers.
What enterprise certifications and qualifications do you have?
We have passed ISO9001 quality management system, ISO14001 environmental management system and ISO45001 occupational health and safety management system certifications. We also hold TS Pressure Pipeline Component Special Equipment Manufacturing License (Grade A, B, B1), TS Special Equipment Production License, CE/PED certificate and API certificate.
Butt Welding Flange-JIS Flange
The core function of the welding neck flange is to improve the strength and tightness of pipe connections via its neck structure. It is especially suitable for severe working conditions with high temperature, high pressure and drastic cyclic loading.
OUR SERVICE
We offers a wealth of product support resources, including a range of technical and downloadable product manuals to product certifications.
Our Service
CANGZHOU LONGGUAN PIPE INDUSTRY
We manufacture various flanges and pipe fittings in carbon steel, stainless steel and alloy steel, supplying standard and custom pipeline components for global industrial projects.
Contact Us
E-mail: sales@lgpipefittings.com
Phone: +86 19333059881
Whatsapp: 8619333059881
Add: Yanglongtan Village, Bianwu Town, Yanshan County, Cangzhou City, Hebei Province, China
