N-STEEL is a specialized supplier and distributor of loose plate flange with 18 years experience. Sufficient customer resources and huge order quantities lead to a result that our products can enjoy relatively low price. In USA, South Korea,Brazil, the UAE, India, Italy, etc., this lap joint flange has won great popularity.

Our loose plate flange is manufactured by means of die forging and machining processes. It has found great popularity in power generation, petroleum, natural gas, chemical, shipbuilding, heat supply, papermaking and metallurgy industries. In addition, this loose flange boasts two different types according to welding methods, namely butt welding and flat welding.

1. Loose Plate Flange (Butt Welding)
Size
3/8"~48"
DN10~DN1200

Pressure
American series: ANSI CLASS 150, CLASS 300, CLASS 400, CLASS 600, CLASS 900, CLASS 1500 and CLASS 2500
European series: PN 2.5, PN 6, PN 10, PN 16, PN 25 and PN 40

Types of Flange Face
American Series: Flat Face (FF), Raised Face (RF), Tongue (T), Groove (G), Female (F), Male (M), Ring Joints Face (RJ)
European Series: Raised Face, Tongue Face, Groove Face, Spigot, Recess, O-Ring Spigot, O-Ring Groove

Materials
Carbon steel: A105
Alloy steel: A182 F 1-F 2-F 5-F 9-F 10-F 91-F 92-F 122-F 911-F 11-F 12-F 21-F 22
Stainless steel: A182 304-304H-304L-304N-304LN, 316-316H-316L-316N-316LN, 321-321H, 347-347H
Low temperature steel: A522 A707 Grade L 1-L 2-L 3-L 4-L 5-L 6-L 7-L 8
High performance steel: A694 F 42-F 46-F 48-F 50-F 52-F 56-F 60-F 65-F 70

Standards
GB/T9112-2000
GB/T9118.1-2000, GB/T9118.2-2000
GB/T9120.1-2000, GB/T9120.2-2000, GB/T9120.3-2000
GB/T9122-2000
GB/T9124-2000
SH/T3406-1996
JB/T74-1994
JB/T75-1994
JB/T84-1994
JB/T85-1994
HG/T20592-2009, HG/T20614-2009
HG/T20615-2009, HG/T20623-2009, HG/T20635-2009
ASME B16.5-2009
EN1092-1-2007, EN1759-1-2004
BS1560-3.1-1989, BS4504-3.1-1989
AFNOR NF E29-200-1-2007
ISO7005-1-1992
JIS B2220-2004

2. Loose Plate Flange (Flat Welding)
Size
3/8"~24"
DN10~DN600

Pressure
American series: CLASS 150, CLASS 300, CLASS 400, CLASS 600, CLASS 900, CLASS 1500 and CLASS 2500European series: PN 2.5, PN 6, PN 10, PN 16, PN 25 and PN 40

Types of Flange Face
American Series: Raised Face (RF), Tongue Face (T), Groove Face (G), Female Face (F), Male Face (M), Ring Joints Face (RJ)
European Series: Raised Face, Tongue Face, Groove Face, Spigot, Recess

Materials
Carbon steel: A105
Alloy steel: A182 F 1-F 2-F 5-F 9-F 10-F 91-F 92-F 122-F 911-F 11-F 12-F 21-F 22
Stainless steel: A182 304-304H-304L-304N-304LN, 316-316H-316L-316N-316LN, 321-321H, 347-347H
Low temperature steel: A522 A707 Grade L 1-L 2-L 3-L 4-L 5-L 6-L 7-L 8
High performance steel: A694 F 42-F 46-F 48-F 50-F 52-F 56-F 60-F 65-F 70

Standards
GB/T9112-2000, GB/T9121.1-2000, GB/T9121.2-2000, GB/T9121.3-2000, GB/T9124-2000
SH/T3406-1996
JB/T74-1994, JB/T75-1994, JB/T83-1994
HG/T20592-2009, HG/T20614-2009, HG/T20615-2009, HG/T20623-2009, HG/T20635-2009
ASME B16.5-2009
EN1092-1-2007, EN1759-1-2004
BS1560-3.1-1989, BS4504-3.1-1989
AFNOR NF E29-200-1-2007
ISO7005-1-1992
JIS B2220-2004