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Since 2025
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VARIOUS TYPES OF FLANGES
Customized Pl Flange Plate Stainless Steel Weld Neck Flange (WN)
US$1.00-50.00 / Piece
100 Pieces (MOQ)
High Quality Forged Stainless Steel Rebar Tube Flange Flange Pipp Fittings
US$1.00-50.00 / Piece
100 Pieces (MOQ)
ASME B16.5 Forged Stainless Steel Carbon Steel A105 RF 5 in DN125 Long Welding Neck Lwn Flange
US$0.70-4.00 / Piece
1,000 Pieces (MOQ)
High Quality Steel Pipe Flange Cover 316L DN150 Pn20/50/110/150/260/420
US$1.00-50.00 / Piece
100 Pieces (MOQ)
Premium 304 Stainless Steel CF63 Loose Sleeve Flange for Industrial Applications
US$1.00-50.00 / Piece
100 Pieces (MOQ)
High Quality Wholesale Socket Weld Flange (SW) Steel Pipe Flange with Neck Butt Welding
US$1.00-50.00 / Piece
100 Pieces (MOQ)
CUSTOM FLANGE
Stainless Steel Pipe Fitting DN15-DN1200 Heat Exchanger Tube Sheet
US$1.00-50.00 / Piece
100 Pieces (MOQ)
Large Diameter Butt Welded Flange 24"48" Large Diameter Forging Manufacturers
US$1.00-50.00 / Piece
100 Pieces (MOQ)
Stainless Steel Large-Diameter Butt Welding Flange Large Diameter Flat Welded Flange
US$1.00-50.00 / Piece
100 Pieces (MOQ)
Durable CNC Machining Titanium Aluminum Turned Parts Steel Brass Wheel Spacers High Precision Metal Parts Radar Universal Flange Accessories
US$1.00-50.00 / Piece
100 Pieces (MOQ)
S304 S316 Stainless Steel Sanitary Non-Standard Flange Ss Flange Filter Quick Open Flange Cover
US$1.00-50.00 / Piece
100 Pieces (MOQ)
Steel Pressure Relief Safety Valve Wcb Safety Gas Valve DN50 Flange From Manufacturer
US$1.00-50.00 / Piece
100 Pieces (MOQ)
Tailored CNC Machining Solutions for High-Quality Metal Components
US$1.00-50.00 / Piece
100 Pieces (MOQ)
MANHOLE/MANWAYS
Hygienic Round Manhole Cover Tank Manway with Side-Swing Opening and Back-Side Opening
US$15.00 / Piece
50 Pieces (MOQ)
530X430mm Food Grade Stainless Steel Elliptical Manway Oval Pressure Tank Manhole with 3bar Pressure
US$15.00 / Piece
50 Pieces (MOQ)
Manhole Factory Sanitary Stainless Steel Full Sight Glass Tank Manway with EPDM
US$15.00 / Piece
50 Pieces (MOQ)
Stainless Steel SS304 Manhole Sanitary Access Hatch Elliptical Pressure Manhole Inward Oval Pressure Manway
US$15.00 / Piece
50 Pieces (MOQ)
Sanitary Food Grade Stainless Steel Manhole Cover Tank Pressure Manway
US$15.00 / Piece
50 Pieces (MOQ)
Stainless Steel Rectangular Square Round Oval Sanitary Pressure Tank Hatch Manhole Manway
US$15.00 / Piece
50 Pieces (MOQ)
435X335mm SS304 SS316L Food Grade Stainless Steel Square Rectangular Tank Manway Manhole
US$15.00 / Piece
50 Pieces (MOQ)
MULTIPLE TYPES OF PIPE FITTINGS
Free Sample Ss Eccentric Reducer 304 304L 316 316L 2205 2507 310S 317L 1/2"-20" Butt Welded Stainless Steel Concentric Reducer
US$0.20-3.00 / Piece
1,000 Pieces (MOQ)
Stainless Steel Competitive Price 304 316 Pipe Fitting ASME ISO PED Customize Sandblasting Seamless Lap Joint Stub End
US$0.70-4.00 / Piece
1,000 Pieces (MOQ)
Sturdy ANSI Duplex Stainless Steel 90 Degree Elbow Pipe Fittings for The Shipbuilding Industry
US$1.00-3.00 / Piece
100 Pieces (MOQ)
ANSI Inconel 800h Ncf600 Cap Fittings Pipe for The Construction Industry
US$1.00-3.00 / Piece
100 Pieces (MOQ)
ANSI B16.3 F316L Stainless Steel Forged Threaded Half Coupling
US$0.20-3.00 / Piece
1,000 Pieces (MOQ)
Plumbing Fittings Ss 304 Pipe Fittings Femal Thread Stainless Steel Union
US$0.20-3.00 / Piece
1,000 Pieces (MOQ)
THREADED PIPE FITTING
Malleable Iron Pipe Fittings Beaded Edge Galvanized Reducing 90 Degree Elbow
US$1.00-50.00 / Piece
100 Pieces (MOQ)
Forged Thread Carbon Steel High Pressure Hex Head Bushing for Petroleum Chemical
US$1.00-50.00 / Piece
100 Pieces (MOQ)
High Pressure Pipe Fittings Stainless Steel Threaded Screwed Cap
US$1.00-50.00 / Piece
100 Pieces (MOQ)
304 Stainless Steel 90 Degree BSPP BSPT NPT Shower Elbow with One Side Barb and Thread Galvanised Casting Forging Technics
US$1.00-50.00 / Piece
100 Pieces (MOQ)
Water Tank Fittings Casting Pipe Fitting Connector High Quality Stainless Steel BSPT NPT Male Thread Hexagon Female Thread Equal
US$1.00-50.00 / Piece
100 Pieces (MOQ)


Wenzhou Long'an Flange Co.,Ltd.
LONGAN-PRECISION FLANGE MANUFACTURER
Wenzhou Long'an Flange was established in 2004 and is situated in the Binhai Economic Development Zone,Wenzhou City,Zhejiang Province,China. As a comprehensive production enterprise,Long'an is involved in the entire manufacturing process,from raw material procurement and forging to processing and turning.
Long'an boasts a professional technical team and a strong,experienced management team. The company's products have achieved a domestic advanced level and have established a diversified and serialized product pattern.
The company operates multiple well-equipped,technologically advanced production lines for stainless steel flanges,featuring 59 lathes and 13 processing centers.
Long'an is rich in talent,with high-tech scientific research personnel,a professional inspection team,and a high-quality sales team.
Long'an incorporates advanced management concepts,encourages full participation in quality improvement activities,and holds health and safety product licenses,as well as a quality management system ISO19001-2016:TS pressure piping components certificate.
Long'an possesses a comprehensive manufacturing system,ensuring that each product undergoes inspection before production to guarantee quality. Each batch of materials is fully heat-treated to achieve stable physical and chemical properties,and products are straightened to ensure good straightness. Turning processes are conducted to meet customer requirements for product quality and appearance.
We have a professional inspection team that conducts surface inspections,dimensional measurements,and PMI inspections. We pay close attention to every detail. Products are only stored and packed for shipment after they are fully qualified.
Long'an upholds an advanced scientific management concept system,with "sincerity-based,customer first" as the company's consistent business philosophy; "quality first,service first" as its principle,which has attracted a large number of market users; and "unique varieties" that occupy a significant market share of steel pipes in China. Building a domestic brand of quality is the goal that Long'an people have been striving for.
After 17 years of striving,Long'an has achieved today's brilliant accomplishments. Today,Long'an has gradually evolved into a large and medium-sized enterprise. Providing quality products for domestic projects and perfect services for customers are the unwavering ideology and actions of Long'an people.
A journey of a thousand miles begins with a single step. Today,Long'an has developed into a large and medium-sized stainless steel flange enterprise,specializing in quality,scale,and branding. Long'an people are not content with this; they are committed to providing more superior,convenient,and mutually beneficial services.

ENTERPRISE TEAM
Every staff member of Longan believes that a successful team and organization is not simply about collaborative work,but rather the pursuit of career by all
employees of Long'an
COMPANY PROFILE
Passion and dedication, enterprising, integrity and win-win, perseverance and persistence.
Wenzhou Longan Flange Co., Ltd. Was founded in 2013, the company is located in Longwan District, Wenzhou City, Zhejiang Province, China Yongxing Street Airport Pearl Road No. 620. With the superior local advantages of Wenzhou, relying on the convenient and efficient supply of raw materials from Qingshan Holding Group, combined with our own strong forging technology and machining capacity, we have created a perfect production system of Longan Flange. At present, the company has more than one hundred numerical control lathes, which can meet the processing of high-precision workpieces with diameters of 4000mm or less, and also has more than ten machining lathes with diameters of 2000mm or more, which are used for processing heavy workpieces and large pipe plates. The company is also equipped with 16 sets of high-precision machining centers, including 6 sets of 3-axis machining centers, 3 sets of 4-axis machining centers, 3 sets of 5-axis machining centers, 3 sets of large-scale gantry machining centers, 1 set of 2-meter horizontal machining centers, and 2 sets of heavy-duty vertical lathes (the tonnage of the products can be up to more than 20 tons), which ensures that each of the customer′s products is completed in the factory to be processed, and controls the quality and quality of each link to ensure that each product meets the We control the quality of each link to ensure that each product meets the customer′s high precision requirements. Advanced equipment configuration to meet the customer′s all-round product development, for the customer′s product innovation and development to provide the most convenient and efficient service.
The company has a complete set of online ERP system to achieve full network coverage of the workshop, from the raw materials into the factory to the finished product out of the warehouse, to achieve paperless production, to ensure the accuracy of the data of each product. At the same time through this system to realize the quality control of each link of the product, with digital process control of each link of production, to ensure that the quality of each link of the product meets the requirements.
The company also has its own laboratory, configured with a variety of testing equipment, including automatic direct-reading spectrometer, handheld spectrometer, spectral alloy analyzer, hydraulic universal material testing machine, pendulum impact tester, and so on 15 sets of testing equipment, a comprehensive bit to meet the customer′s requirements for product testing, and at the same time, the company has all aspects of the qualification of the inspectors, for the customer′s product quality escort.
The company adheres to the "improve customer satisfaction and employee happiness index" for the purpose of their own ability to contribute to the progress and development of society as a whole. We firmly believe that only the development of the customer, the staff well, the enterprise can be long-term stable development, this is the Longan flange′s corporate philosophy, Longan, is committed to be a user assured that the supplier!
Wenzhou Longan Flange Co., Ltd. Was founded in 2013, the company is located in Longwan District, Wenzhou City, Zhejiang Province, China Yongxing Street Airport Pearl Road No. 620. With the superior local advantages of Wenzhou, relying on the convenient and efficient supply of raw materials from Qingshan Holding Group, combined with our own strong forging technology and machining capacity, we have created a perfect production system of Longan Flange. At present, the company has more than one hundred numerical control lathes, which can meet the processing of high-precision workpieces with diameters of 4000mm or less, and also has more than ten machining lathes with diameters of 2000mm or more, which are used for processing heavy workpieces and large pipe plates. The company is also equipped with 16 sets of high-precision machining centers, including 6 sets of 3-axis machining centers, 3 sets of 4-axis machining centers, 3 sets of 5-axis machining centers, 3 sets of large-scale gantry machining centers, 1 set of 2-meter horizontal machining centers, and 2 sets of heavy-duty vertical lathes (the tonnage of the products can be up to more than 20 tons), which ensures that each of the customer′s products is completed in the factory to be processed, and controls the quality and quality of each link to ensure that each product meets the We control the quality of each link to ensure that each product meets the customer′s high precision requirements. Advanced equipment configuration to meet the customer′s all-round product development, for the customer′s product innovation and development to provide the most convenient and efficient service.
The company has a complete set of online ERP system to achieve full network coverage of the workshop, from the raw materials into the factory to the finished product out of the warehouse, to achieve paperless production, to ensure the accuracy of the data of each product. At the same time through this system to realize the quality control of each link of the product, with digital process control of each link of production, to ensure that the quality of each link of the product meets the requirements.
The company also has its own laboratory, configured with a variety of testing equipment, including automatic direct-reading spectrometer, handheld spectrometer, spectral alloy analyzer, hydraulic universal material testing machine, pendulum impact tester, and so on 15 sets of testing equipment, a comprehensive bit to meet the customer′s requirements for product testing, and at the same time, the company has all aspects of the qualification of the inspectors, for the customer′s product quality escort.
The company adheres to the "improve customer satisfaction and employee happiness index" for the purpose of their own ability to contribute to the progress and development of society as a whole. We firmly believe that only the development of the customer, the staff well, the enterprise can be long-term stable development, this is the Longan flange′s corporate philosophy, Longan, is committed to be a user assured that the supplier!
Authentication
Business Type:
Manufacturer/Factory & Trading Company
Main Products:
Flange
Year of Establishment:
2013-11-08
Number of Employees:
105
Management System Certification:
ISO9001:2015, ISO45001:2018, ISO14001
Address:
No. 620, Mingzhu Road, Yongxing Street, Longwan District, Wenzhou, Zhejiang, China
Solutions
OEM/ODM
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Sample Order