Durable Manhole Flange for Reliable Sewer and Drainage Systems

• Standard: ANSI, DIN, GB, JIS, GOST, BSW
• Type: Welding Flange
• Material: Carbon Steel
• Model NO.: DN15-DN600
• Structure: Flanges
• Connection: Welding
• Sealing Surface: FF
• Manufacturing Way: Forging
• Transport Package: Plywood Case
• Specification: DN15-DN600
• Trademark: SHANXI JINYU
• Origin: Shanxi China
• HS Code: 73079100
• Production Capacity: 1000t

Product Description

Product Description

 

Overview

 

A manhole is an opening structure for personnel to enter and exit equipment for installation, maintenance, and safety inspection. The manhole flange is a device installed on the manhole to connect the manhole cover and the equipment body, serving the functions of sealing and fastening.

Structure and Types

 

• Structure: Generally, it consists of a short cylinder section (or short pipe), a flange, and a manhole cover with a handle.
• Types: In the TB - 79 manhole standard, there are two types: flat - welding flange manholes and butt - welding flange manholes. In the HG - 93 manhole standard, there are three types: plate - type flat - welding flange manholes, neck - type flat - welding flange manholes, and neck - type butt - welding flange manholes.

Characteristics

 

• High strength: The design takes into account the structural strength requirements, enabling it to withstand high pressure and heavy loads.
• Corrosion - resistant: The materials are mostly stainless steel or carbon steel, which can maintain a stable working state in harsh environments.
• High - temperature resistant: It has reliable temperature - resistant performance for working in high - temperature environments.
• Good sealing performance: Through reasonable design and manufacturing processes, it can provide a reliable sealing effect.

Working Principle and Application Fields

 

• Working principle: The manhole cover and the flange on the equipment body are connected and fastened by bolts. The sealing gasket in the middle undergoes elastic deformation under the pre - tightening force of the bolts, filling the gap between the flange and the cover to achieve sealing and prevent the leakage of the medium in the equipment.
• Application fields: It is widely used in pressure vessels, storage tanks, large - scale special heat exchangers, and other equipment in industries such as chemical, petroleum, pharmaceutical, food, and water treatment. These equipment need to be equipped with manholes to allow personnel to enter for installation, maintenance, cleaning, and safety inspection.

Production Standards

 

The production of manhole flanges usually follows...

 

 

 

Detailed Photos

 

The manhole flange is a component used for the connection and sealing of the manhole.

Dingxiang Jinyu Forging Co., Ltd. is located in Dashagou Village, jiangcun Township, Dingxiang County, Xinzhou,known as the "hometown of Chinese forging", with a registered capital of 5 milion yuan. Superior geographical location, 100 kilometers away from the provincial capital Taiyuan, with convenient and fast road and railway transportation. Rich in coal, electricity, and iron resources, we are a professional manufacturer of forged fanges and pressure vessel forgings; We have the ability to integrate design, raw material procurement, cutting, forging, heat treatment, machining, mechanical testing, non-destructive testing, mechanical typing, painting, packaging, and shipping operations. The annual production capacity is over 10000 tons, with specifications ranging from DN15 to DN6000mm. The maximum weight per unit of finished products is 20 tons, and the pressure ranges from 150-2500 pounds, including national standards, American standards, British standards, German standards, Japanese standards,and non-standard fanges and forgings.

The main materials used in production include high-quality carbon structural steel, low-alloy high-strength steel heat-resistant steel, and various types of stainless steel (carbon body, austenite, matensite, dispersion hardening,duplex stainless steel)

The company covers an area of over 10000 square meters and currently has 105 fixed emplovees, including 8 management personnel with high school education or above. The organizational chart is detalled in the attached table. The company has a cuting workshop, forging workshop, machining workshop, and packaging workshop. Raw material warehouse, semi-finished product warehouse, finished product warehouse.