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SS 304L Lap Joint Flange

SS 304L Lap Joint Flange

Loose flanges are mainly divided into two types: plate loose flanges and lap joint flanges.Both are movable flange types used in industrial piping systems. They require no welding on the flange itself and facilitate easy installation.
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Description

Zhejiang Daye Flange Co., Ltd. is one of the leading manufacturers and suppliers of ss 304l lap joint flange in China. With abundant experience, we are committed to providing high quality flanges made in China with competitive price. We warmly welcome you to buy durable ss 304l lap joint flange in stock here from our factory. Also, quotation is available.

 

Loose flanges are mainly divided into two types: plate loose flanges and lap joint flanges.Both are movable flange types used in industrial piping systems. They require no welding on the flange itself and facilitate easy installation.

 

The differences between the two are listed below:

Plate Loose Flange,Consists of two components: flange plate and loose ring. Applicable standards include EN1092-1 Type02/04, DIN2642, etc. The flange plate resembles a plate flat welding flange. Instead of welding the flange to the pipe, the loose ring is welded to the pipe. The flange plate can slide freely along the pipe and does not come into contact with the medium inside the pipe.

Lap Joint Flange,Composed of a flange plate and a stub end. The flange plate features a short hub,. Its application method is similar to that of the plate loose flange, yet it delivers superior sealing performance.

In terms of material selection, SS 304L lap joint flanges and loose plate flanges are the most widely adopted options. Our SS 304L lap joint flanges are manufactured from premium 304L raw material with stable properties to enhance operational efficiency.

 

Parameters

 

 

Standard:

ASME B16.5, DIN EN 1092-1, GOST 33259, JIS B2220,AWWA-C207, MSS SP-44, Customization

Certifications:

PED/CE, ISO9001, ISO 45001, ISO14001

Size:

1/2"-160"/Dn10-Dn4000

Rating:

Class150-Class2500/Pn10-Pn40

Material:

Stainless steel: 304/304L, 316/316L, 321, 316Ti, 347/347H, 310S

Super stainless steel: 254SMO/F44, 904L

Duplex steel: F51/2205, F53/2507

Special alloy steel:Inconel(625, 600, 718, 750, 601),

Hastelloy(276, C-22, C-4, C, X, B-2), Monel(400, 500), Incoloy(800, 825, 020, 028, 925),etc

Facing:

RF/FF/MFM/TG

 

Product Advantage

 

 

  • Flexible installation
  • Facilitates later maintenance and replacement
  • Reduces piping stress

As the flange ismovable, it relieves stress at joints by accommodating pipe vibration as well as thermal expansion and contraction.

 

Applications

 

Connection for medium and low pressure pipelines

Large-diameter pipelines

Pipelines requiring frequent disassembly

 

 
Test
 

Mill certificate,100%PMI,Tensile Test,Hardness Test,Impact Test,IC Test,etc.it depends on the requirements.

product-800-533
022001
025001

 

Cerfitications
 
 
DAYE ALL CERTIFICATE00

PED

DAYE ALL CERTIFICATE02

PED

ISO 45001 ENGLISH

ISO 45001

ISO 9001 ENGLISH

ISO 9001 

ISO 14001 ENGLISH

ISO 14001

 

Process

 
1
Forging
2001
Heat Treatment
3001
Finish Machining
4001
Performance Test
012 -
Marking
 
 
Packaging
6

Outer Packaging:

Fumigated wooden crates/Fumigation-free plywood crates/Customized wooden crates

6

Inner Packaging:

Plastic flange protectors/Bubble wrap/Cardboard/Protective paper

Packaging can be customized to meet your specific requirements.

FAQ

 

 

Q: What is the difference between loose flange and plate slip-on flange?

A: The most significant difference lies in the detachable application of loose flanges. Once a plate slip-on flange is welded, it cannot move, whereas a loose flange can be adjusted along the pipe.

Q: What is the difference between 304 lap joint flange and SS 304L lap joint flange?

A: It mainly depends on carbon content. Low-carbon grade delivers better corrosion resistance. For media with weak corrosivity, SS 304L lap joint flange is preferred.

Q: What is the MOQ?

A: We don't have MOQ,but the more quantity,the price lower.

Q: What are your payment terms?

A: Perfer TT,L/C also acceptable.

Q: What surface finish do you provide?

A: 125-150AARH/,we can also customize accoding to your requirements.

 

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