ASME B16.36 ALLOY 31 Orifice Flange Welding Neck Raised Face 6 Inch SCH10S CL300

Quick Details

• Size: 6" (DN150)
• Material: Alloy 31 (Alloy 1.4562 / UNS N08031)
• Place of Origin: Zhejiang, China (Mainland)
• Brand Name: Yaang
• Standard or Nonstandard: Non-standard
• Technics: Forged
• Connection: Welding
• Shape: Round
• Standard: ASME, etc
• Type: Alloy 31 Orifice Flange

Packaging & Delivery

Packaging Details:	Seaworthy plywood case or as customer requests
Delivery Detail:	2 - 10 days after receiving the deposit

Specifications

ASME B16.36 ALLOY 31 Orifice Flange Welding Neck Raised Face
1. Material: Alloy 31 (Alloy 1.4562 / UNS N08031)

2. Size: 6" (DN150)

     WT: Sch10S

3. Standard: ASME, etc

4. Pressure: 300#

China Orifice Flange Manufacturer Yaang offers ASME B16.36 ALLOY 31 Orifice Flange Welding Neck Raised Face, 6 Inch, SCH10S, CL300.

Alloy 31 is a nickel, chromium and molybdenum stainless steel with nitrogen and cupper additions. It combines moderate tensile strength and high ductility with excellent corrosion resistance in sulfuric acid, reducing and oxidizing media and has strong resistance to corrosion and erosion corrosion in phosphoric environment.

Typically the alloy has PREN of ≥ 48, which ensure that the resistance to pitting corrosion is high.

Chemical composition of Alloy 31

Alloy 31, N08031, 1.4562,
Chemical composition(%)	Carbon, max	0.015
	Manganese, max	2.0
	Phosphorus, max	0.020
	Sulfur, max	0.010
	Silicon, max	0.3
	Nickel	30.0~32.0
	Chromium	26.0~28.0
	Molybdenum	6.0~7.0
	Copper	1.0~1.4
	Nitrogen	0.15~0.25
	Iron	balance
Tensile strength(MPa, min)		650
0.2% Yield strength(MPa, min)		276
Elongation(%, min)		40

Type	ALLOY 31 Orifice Flange
Size	6" (DN150) WT: Sch10S
Standard or Nonstandard	Standard
Material	Stainless Steel: ASTM A403 WP304, 304L, 310, 316, 316L, 321, 347, 904L Carbon Steel: ASTM A234 WPB, WPC ASTM A105 WPHY 42, 46, 52, 56, 60, 65, 70 Alloy Steel: ASTM A234 WP1, WP5, WP9, WP11, WP22, WP91 Duplex Stainless Steel: F51, 2205, F53, 2507, etc
Surface treatment	Chamfering
Applications	Petroleum,chemical,power,gas,metallurgy, shipbuilding, construction, etc

What Is An Orifice Flange?

An Orifice Flange is used in combination with orifice meters to measure the flow rate of oil, gas and other liquids conveyed by the pipeline. Orifice flanges are manufactured to ASME B16.36 in multiple sizes and, material grades. 

An orifice flange is used to measure the flow of the fluid conveyed by the pipeline via a flow nozzle positioned on the flange itself. Pairs of pressure tappings are machined onto the orifice flange, making separate tappings on the pipe wall unnecessary.

The traditional orifice flange assembly consists of a pair of flanges, orifice plate, bolts, nuts, gaskets, jacking screws and plugs. Jacking screws ensure the easy removal of the primary flow element.

Orifice flanges are available in all ASTM forged grades (ASTM A105, ASTM A350, ASTM A694, ASTM 182 respectively for carbon, alloy and, stainless steel flanges), dimensions (combinations of nominal sizes and pressure ratings) and, in socket weld, threaded or weld neck shape (WN is the most used).

The range of orifice flanges covers all standard sizes and ranges, and all common flange materials. Flanges are available in Welding Neck, Slip On, and Threaded form, and are typically supplied with two 1/2" NPT tappings in each flange.

ASME B16.36 covers Dimensions and dimensional tolerances from orifice flanges (similar to those covered in ASME B16.5) that have orifice pressure differential connections. Coverage is limited to the following flanges:

• WELDING NECK CLASSES 300, 400, 600, 900, 1500, 2500
• SLIP ON CLASS 300
• THREADED CLASS 300

ORIFICE FLANGE DIMENSIONS (WELD NECK, CLASS 300 RF)

NPS	A	R	O	T	H	X	Tg
1	33.4	50.8	125	36.6	81	54	6.4
1½	48.3	73	155	36.6	84	70	6.4
2	60.3	92.1	165	36.6	84	84	6.4
2½	73	104.8	190	36.6	87	100	6.4
3	88.9	127	210	36.6	87	117	9.5
4	114.3	157.2	255	36.6	90	146	12.7
6	168.3	215.9	320	36.6	98	206	12.7
8	219.1	269.9	380	39.7	110	260	12.7
10	273	323.8	445	46.1	116	321	12.7
12	323.8	381	520	49.3	129	375	12.7
14	355.6	412.8	585	52.4	141	425	12.7
16	406.4	469.9	650	55.6	144	483	12.7
18	457	533.4	710	58.8	157	533	12.7
20	508	584.2	775	62	160	587	12.7
24	610	692.2	915	68.3	167	702	12.7

NPS	Bolt Diameter	# Bolts	Bolt holes diameter	Bolts Diameter	Bolts lenght mm.
1	88.9	4	11/16	5/8	125
1½	114.3	4	13/16	3/4	135
2	127	8	11/16	5/8	125
2½	149.2	8	13/16	3/4	135
3	168.3	8	13/16	3/4	135
4	200	8	13/16	3/4	135
6	269.9	12	7/8	3/4	135
8	330.2	12	1	7/8	145
10	387.4	16	1 1/8	1	165
12	450.8	16	1¼	1 1/8	180
14	514.4	20	1¼	1 1/8	185
16	571.5	20	1 3/8	1¼	195
18	628.6	24	1 3/8	1¼	205
20	685.8	24	1 3/8	1¼	215
24	812.8	24	1 3/8	1½	240

COMMENTS: Height of Raised Face (RF) in CLASS 300 is 2 mm

APPLICATIONS:                                      

1. Petrochemical industry

2. Pharmaceutical industry

3. Food industry

4. Aviation and aerospace industry

5. Architectural decoration industry

6. Oil and gas industry

Other Features: 

1) Chemical and Physical characteristic: durable, corrosion resistant and high-temperature resistant

2) We also produce flange with special specifications according to customers’ requirements;

Where can we find the high quality ASME B16.36 ALLOY 31 Orifice Flange Welding Neck Raised Face, 6 Inch, SCH10S, CL300.

You can visit this website: www.yaang.com (Yaang Pipe Industry Co., Limited).

If any inquiry about products, please feel free to contact us [email protected]