Jinan Hyupshin Flanges Co., Ltd produce ANSI B16.5 flanges, B16.47 flanges, AWWA C207 flanges, BS 4504 flanges, BS T/D flanges, DIN flanges, EN 1092-1 flanges, JIS flanges, GOST 12820-80 flanges, GOST 12821-80 flanges, SABS 1123 flanges, SANS 1123 flanges, UNI flanges, KS B1503 flanges, ISO 7005 flanges, NS flanges, AS flanges, Korean KS mark flanges, Korean KS certificate flanges, carbon steel, stainless steel, mild steel, forging flanges, forged flanges, galvanizing flangesJinan Hyupshin Flanges Co., Ltd, Slip On flanges, Slip On FF flange, Slip On RF flanges, SOFF flanges, SORF flanges, Welding Neck flanges, Weld Neck flanges, Welded Neck flanges, WNRF flanges, Blind flanges, Blank flanges, Plate flanges, Flat flanges, FF flanges, Slip on Bossed flanges, Plain flanges, Plane flanges, Raised Face flanges, Flat Face flanges, Threaded flanges, Screwed flanges, Loose flanges, Lapped flanges, Lap Joint flanges, LJ flanges, Socket Weld flanges, SW flanges, BS PT flanges, BS PT threaded screwed flanges, 150lbs flanges, 300lbs flanges, 600lbs flanges, PN6 flanges, PN10 flanges, PN16 flanges, PN25 flanges, PN40 flanges, 5K flanges, 10K flanges, 16K flanges, 20K flanges, 30K flanges, 40K flanges, SOP FF flanges, SOP RF flanges, SO HUB flanges, SOH flanges, SOH RF flanges, SOH FF flanges, SS400 flanges, SF440A flanges, SF390A flanges, C22.8 flanges, A105 flanges, S235JRG2 flanges, RST37-2 flanges, SA A105N flanges, RST37.2 flanges, P235GH flanges, P245GH flanges, P250GH flanges, P265GH flanges, Q235B flanges, A36 flanges, A350 LF flanges, 20# steel flanges, 16Mn flanges, 20Mn flanges  
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HOME > PRODUCTS CENTER > STANDARD FLANGE FACING TYPE & FACING FINISH
Standard Finishes For Face of Flange (MSS SP6)
Flange Facing: The finish of contact faces of pipe flanges and connecting end flanges of fittings shall be judges by visual comparison with Rastandards (See ANSI, ASME B46.1) and not by instruments having stylus tracers and electronic amplification, the finishes required are given below. Other finishes maybe furnished by agreement between user and manufacturer.

Raised Face and Lare Male and Female: Either a serrated concentric or serrated spiral finish having from 24 grooves/in. to 40 grooves/in. shall be used. The cutting tool employed shall have a 125 μin. roughness.

Flange Facing Finish

 
    ▩  STOCK FINISH
 
  The most widely used of any gasket finish, because, practically, is suitable for all ordinary service conditions. This is contonuous spiral froove. Flanges sizes 12" and smaller, are produced with a 1/16" round-nosed tool at a feed of 1/32" per revolution. For sizes 14" and larger, the finish is made with 1/8" round-nosed tool at a feed of 3/64" per revolution.
 
    ▩  SPIRAL SERRATED OR PHONOGRAPHIC
 
This finish is produced by using a 90° included-angle [V] tool, making a spiral groove 1/64" deep of 1/32".
 
    ▩  CONCENTRIC SERRATED
 
This finish a produced by using a 90° included-angle [V] tool, making concentric groove 1/64" deep and 1/32 apart.
 
    ▩  SMOOTH FINISH
 
This finish is produced by several shapes of tools cutting at speeds and feeds which leave no definite tool marks apparent to the naked eye.
 
1. RAISED FACE, AND LARGE MALE AND FEMALE
Either a serrated-concentric or serrated-spiral finish having from 30 to 55 grooves per inch is used.
The cutting tool empolyed has an approximate 0.06 in. or larger radius. The resultant surface finish has a 500 microinch (12.5 ㎛) approximate roughness.
2.
TONGUE AND GROOVE, AND SMALL MALE AND FEMALE
The gasket contact surface does not exceed 125 microinch (3.2 ㎛) roughness.
3.
RING TYPE JOINT
The inside wall surface of gasket groove does not exceed 63 microinch (1.6 ㎛) roughness.
4.
BLIND
Bland flanges need not be faced in the center if, when this center part is raised, its diameter is at least 1 in. smaller than the inside diameter of fittings of the corresponding pressure class.
When the center part is depressed, its diameter is not greater than the the inside diameter of the corresponding pressure class fitting, Maching of the depressed center is not required.

Jinan Hyupshin Flanges Co., Ltd, Flanges Manufacturer, Exporter, Competitive Prices, High Quality, Fast Delivery
The standards of pipe flanges and fittings with ANSI, DIN, UNI, BS, JIS, KS, GOST, SABS etc.
Flange Facing Types

Jinan Hyupshin Flanges Co., Ltd  
RAISED FACE FLANGE [ Enquiry ]

The raised face is the most common used flange face. It is called raised face because the gasket is raised 1/16″ and 1/4″ above the bolt circle face: 1/16″ for 300 lb. and less, 1/4″ for 400 lb. and more. The flange facings are machine finished toANSI/ASME B16.5 requirements.

Either a serrated-concentric or serrated-spiral finish having from 30 to 55 grooves per inch is used. The cutting tool empolyed has an approximate 0.06 in. or larger radius. The resultant surface finish has a 500 microinch (12.5 ㎛) approximate roughness.
   

 

Jinan Hyupshin Flanges Co., Ltd  
FLAT FACE FLANGE [ Enquiry ]

Typically these flanges are used on pump facings or on fiberglass flanges where the torque of compressing the gasket will damage the flange body. They are found in 150# and 300# ratings. Their principal use is to make connections with 125# and 250# cast iron flanges, respectively.
     
Jinan Hyupshin Flanges Co., Ltd  
RING TYPE JOINT FLANGE [ Enquiry ]

Class 300 and larger) – This flange is normally used for high pressure gas pipe work. Ring type gaskets must be used on this type of flange.

The inside wall surface of gasket groove does not exceed 63 microinch (1.6 ㎛) roughness.
     
Jinan Hyupshin Flanges Co., Ltd  
BLIND FLANGE [ Enquiry ]

Blind flanges need not be faced in the center if, when this center part is raised, its diameter is at least 1 in. smaller than the inside diameter of fittings of the corresponding pressure class. When the center part is depressed, its diameter is not greater than the the inside diameter of the corresponding pressure class fitting, Maching of the depressed center is not required.
   
 
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Jinan Hyupshin Flanges Co., Ltd

Pingpu Road, Niupai, Mingshui,
Zhangqiu City, Shandong,
China, 250200

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Fax: +86 531 832 918 78

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