ASTM A350 LF2 CL1 FLANGE CL900 WN RTJ SCH 160

Detail Information

Type: WN RTJ Flange
Material and Grade: ASTM A350 LF2 CL1 ASME B16.5
Manufacture Method: Forged
Size: 3 INCH CL900 SCH 160 RTJ
Surface Treatment: Oiled etc.
Application: For Pipe Connection, etc.
Packing: Pallet/In Bundles/Wooden Case with Steel Strips or as Your Requirement.
Payment Terms: TT/LC, West Union, Paypal and O/A.
Delivery Time: 7-25 Days after Receiving the Deposit.

The A350 LF2 Class 1 flange is the most commonly used, with Class 2 being used in specific applications. The flanges can also be heat treated for hardening. The heat treatment methods are normalising and tempering. The A350 LF2 Blind Flange is a type of flange that is fitted to the ends of pipes to completely close a pipeline. They can be bolted for easy removal for maintenance or permanently welded. A350 LF2 carbon steel slip-on flanges are used with seamless pipe for easy installation in the correct position as the flanges allow the pipe to slip onto the flange and move into the correct position before welding or bolting. The Astm A350 Grade LF2 Class 2 pipe flange is also used in similar capacities. Please contact us for further information and product pricing.

ASTM A350 Grade LF2 Flange Manufacturing Process

Forging temperature for this material should be 900 – 1200oC.
Soak times should be kept to a minimum to avoid heavy scaling, but sufficient time should be allowed for the centre to reach the furnace temperature.
to reach furnace temperature. After forging, parts should be allowed to cool in still air.

ASTM A350 Grade LF2 Flange Heat Treatment Condition.

ASTM A350 Grade LF2 is a general purpose carbon steel normally supplied in normalised, normalised and tempered or quenched and tempered condition. Quenched and tempered condition

Normalising – Heat to 860 – 920°C for a time appropriate to the cross section, air cool (if required).
Hardening – Heat to 890 – 960oC for a time commensurate with the ruling section and quench in water.
Tempering – Re-heat to 590oC minimum as required depending on final properties required.

Hold for a time appropriate to ruling section and cool in still air.

ASTM A350 LF2 Flange hardness requirement

The hardness shall be a maximum of 197 HB, which meets the requirements for carbon steel forgings in NACE MR0175/ISO 15156-2.

Carbon Steel A350 LF2 Flanges Chemical Composition

Grade	C%	Mn%	Si%	S%	P%	Cr%	Ni%
LF1	0.30 max	0.6/1.35	.15/.30	.040 max	.035 max	0.30 max	0.40 max
Lf2	0.30 max	0.6/1.35	.15/.30	.040 max	.035 max	0.30 max	0.40 max
LF3	0.20 max	0.90	.20/.35	.040 max	.035 max	0.30 max	3.3/3.7

Weight Of Carbon Steel A350 LF2 Flanges

Standard	Class	Diameter	Bolt Circle Diameter	Number of Bolts	Bolt Size	Diameter of Bolt Hole
AS4087	PN14	95	67	4	M12	14
AS 2129 Flange	Table C	95	67	4	13	14
	Table D	95	67	4	13	14
	Table E	95	67	4	13	14
	Table F	95	67	4	13	14
	Table H	114	83	4	16	17
	Table J	114	83	4	16	17
ASTM B16.5	ASTM 150	89	60	4	13	16
	ASTM 300	95	67	4	13	16
	ASTM 600	95	67	4	13	16
	ASTM 900	121	83	4	19	22
	ASTM 1500	121	83	4	19	22
ISO 7005 (DIN) Flange	PN6	80	55	4	M10	11
	PN10	95	65	4	M12	14
	PN16	95	65	4	M12	14
	PN20	90	60.5	4	M14	16
	PN25	95	65	4	M12	14
	PN40	95	65	4	M12	14