Shandong Huichi Industry and Trade Co.,Ltd.
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API 6A Weld Neck Flanges are pipe flanges attach by welding the pipes to the neck of the flanges. They are divided into necked flat welding flanges and necked butt welding flanges.
1. Different appearance: the neck of the necked flat welding flange is relatively short and is on the same plane as the flange itself; while the neck of the necked convex flange is relatively long and protrudes above the surface of the flange.
2. Different installation methods: the necked flat welding flange is generally directly connected to the pipeline or equipment, and the flange needs to be fixed to the connected component with bolts; while the necked convex flange needs to install a gasket on the flange, and then use bolts to connect the flange to the connected pipe or equipment to ensure sealing performance.
3. Different applicable scenarios: the necked flat welding flange is suitable for some low pressure and low temperature occasions, while the necked convex flange is suitable for some high pressure, high temperature and corrosive environments.
4. Different sealing performance: the necked convex flange usually has better sealing performance and anti-explosion performance than the necked flat welding flange.
1. Robust in construction;
2. Longer functional life;
3. Corrosion resistant;
4. Surface treatment: black anti-rust oil, transparent oil, hot-dip galvanizing or according to customer's special requirements;
5. Packaging information: Fumigation-free wooden box, pallet, special packaging can be made according to customer's requirements;
6. The size can be customized, and the flange can be produced according to the drawings provided by the customer.
Petroleum, chemical industry, electricity, heat, water supply, drainage, petroleum machinery and equipment, petrochemical machinery and equipment, wellhead equipment, Christmas trees.
Size: 1-13/16" - 26-3/4"
Working Pressure: 2000PSI, 3000PSI, 5000PSI, 10000PSI, 15000PSI, 20000 PSI
Material: AISI 4130(forged)/ SUS316/Inconel 625
Face: FF, RF, RTJ
Connection: bolted or studded
Temp Class: L-U
Material Class: BB, CC, DD, EE, FF
Product Specification Level: PSL1, PSL2, PSL3, PSL4
Performance Requirement: PR1, PR2
Standards: API 6A, NACE MR0175, ISO 9001, ISO14001, ANSI
Iron box or iron frame , or customized according to customer requirements , or according to customer requirements.
100% tested before delivery.
Express, truck , train , air , sea , or customized according to customer requirements.
Shandong Huichi Petroleum Equipment Co.,Ltd. is a professional supplier of drilling equipment for the oil and gas industry.
Our Huichi products cover all aspects of drilling , operations , oil production , etc. We have rich experience in the production and export of oil drilling supporting equipment.
One-stop drilling equipment supply;
More than 10 years of experience in drilling equipment supply;
More than 10 people engaged in export business;
More than 40 partner countries and regions;
More than 200 customers having close cooperative relationships;
More than 250+ partner factories as suppliers.