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ASTM B381 Titanium Grade 2 Long Weld Neck Flange with Complete Specifications for Chemical Use in -250°F to 800°F Temperature Range

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Brand Name :	LHTi
Model Number :	Titanium Long Weld Flanges
Certification :	ISO9001,CE, API,etc
Price :	as per your requirement
Payment Terms :	L/C,D/A,D/P,T/T,Western Union
Supply Ability :	100-200 Ton/Tons Per Month
Delivery Time :	about 7-14 days for delivery

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ASTM B381 Titanium Grade 2 Long Weld Neck Flange with Complete Specifications for Chemical Use in -250°F to 800°F Temperature Range

ASTM B381 Titanium Grade 2 Long Weld Neck Flange Titanium Flange RFWN

Introduction:

The ASTM B381 Titanium Grade 2 Long Weld Neck Flange (RFWN) is a critical component in industrial piping systems, known for its outstanding corrosion resistance, strength, and reliability. Specifically, Titanium Grade 2 is a commercially pure titanium alloy that offers excellent performance in highly corrosive environments such as marine, chemical processing, and aerospace applications. The Long Weld Neck Flange (RFWN) design, combined with the titanium material, ensures superior performance in demanding conditions.

Specifications of Titanium Long Weld Flanges:

Specification	ASTM B381 / ASME SB381
Standard	ANSI/ASME B16.5, B16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, GOST Flange, ASME/ANSI B16.5/16.36/16.47A/16.47B, MSS SP44, ISO70051, JISB2220, BS1560-3.1, API7S-15, API7S-43, API605, EN1092
Size Range	1/2″ (15 NB) to 48″ (1200NB), DN10 ~ DN5000
Class	150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS, DIN Standard ND-6,10, 16, 25, 40, Etc.
Connect Type/Flange Face Type	Raised Face (RF), Ring Type Joint (RTJ), Flat Face (FF), Large Male-Female (LMF), Small Male-Female (SMF)
JIS Standards	JIS B2220, JIS B2221, 5K, 10K, 16K, 20K, 30K, 40K, 63K
DIN Standards	DIN 2527, DIN 2566, DIN 2573, DIN 2576, DIN 2641, DIN 2642, DIN 2655, DIN 2656, DIN 2627, DIN 2628, DIN 2629, DIN 2631, DIN 2632, DIN 2633, DIN 2634, DIN 2635, DIN 2636, DIN 2637, DIN 2638, DIN 2673
BS Standards	BS 4504, BS 1560, BS 10

Comparison Table of Different Grades:

Property	Titanium Grade 2	Titanium Grade 5	Titanium Grade 7	Carbon Steel	Stainless Steel
Composition	99% Titanium	90% Titanium, 6% Aluminum, 4% Vanadium	90% Titanium, 6% Aluminum, 2% Palladium	Iron + Carbon	Iron + Chromium (10-20%) + Nickel
Corrosion Resistance	Excellent (especially in chlorides, seawater)	Excellent (better high-temperature resistance)	Excellent (higher corrosion resistance in acidic environments)	Poor (rusts easily in moisture, acids)	Excellent (against oxidizing acids, chlorides)
Tensile Strength	Moderate	High (stronger than Grade 2)	Moderate to High	Moderate	High
Fatigue Resistance	Moderate	Excellent	High	Low	Good
Temperature Resistance	Moderate	High (better heat resistance)	High (oxidation resistance)	Low	Moderate
Applications	Marine, Chemical, Medical	Aerospace, Military, Chemical Processing	Chemical Processing (aggressive environments)	General Industry, Construction	Chemical, Food Processing, Medical
Advantages	Corrosion resistance, Weldability	Strength, High-performance, Heat resistance	Enhanced corrosion resistance, Weldability	Cost-effective, Strength	Durability, Corrosion resistance
Cost	Expensive	Expensive	Expensive	Low	Moderate to High

Class 300 Long Weld Neck Flange Dimensions:

Size in Inch	Size in mm	Outer Dia.	Flange Thick.	Hub OD	Weld Neck OD	RF Dia.	RF Height	PCD	Hub Length	No of Bolts	Bolt Size UNC	Machine Bolt Length	RF Stud Length	Hole Size	ISO Stud Size
		A	B	C	D	E	F	G	H
1/2	15	95	12.7	38	21.3	34.9	2	66.7	As Required	4	1/2	55	65	5/8	M14
3/4	20	115	14.3	48	26.7	42.9	2	82.6	As Required	4	5/8	65	75	3/4	M16
1	25	125	15.9	54	33.4	50.8	2	88.9	As Required	4	5/8	65	75	3/4	M16
1 1/4	32	135	17.5	64	42.2	63.5	2	98.4	As Required	4	5/8	70	85	3/4	M16
1 1/2	40	155	19.1	70	48.3	73	2	114.3	As Required	4	3/4	75	90	7/8	M20
2	50	165	20.7	84	60.3	92.1	2	127	As Required	8	5/8	75	90	3/4	M16
2 1/2	65	190	23.9	100	73	104.8	2	149.2	As Required	8	3/4	85	100	7/8	M20
3	80	210	27	117	88.9	127	2	168.3	As Required	8	3/4	90	110	7/8	M20
3 1/2	90	230	28.6	133	101.6	139.7	2	184.2	As Required	8	3/4	95	110	7/8	M20
4	100	255	30.2	146	114.3	157.2	2	200	As Required	8	3/4	95	115	7/8	M20
5	125	280	33.4	178	141.3	185.7	2	235	As Required	8	3/4	110	120	7/8	M20
6	150	320	35	206	168.3	215.9	2	269.9	As Required	12	3/4	110	120	7/8	M20
8	200	380	39.7	260	219.1	269.9	2	330.2	As Required	12	7/8	120	140	1	M24
10	250	445	46.1	321	273	323.8	2	387.4	As Required	16	1	140	160	1 1/8	M27
12	300	520	49.3	375	323.8	381	2	450.8	As Required	16	1 1/8	145	170	1 1/4	M30
14	350	585	52.4	425	355.6	412.8	2	514.4	As Required	20	1 1/8	160	180	1 1/4	M30
16	400	650	55.6	483	406.4	469.9	2	571.5	As Required	20	1 1/4	165	190	1 3/8	M33
18	450	710	58.8	533	457	533.4	2	628.6	As Required	24	1 1/4	170	195	1 3/8	M33
20	500	775	62	587	508	584.2	2	685.8	As Required	24	1 1/4	185	205	1 3/8	M33
24	600	915	68.3	702	610	692.2	2	812.8	As Required	24	1 1/2	205	230	1 5/8

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ASTM B381 Titanium Grade 2 Long Weld Neck Flange with Complete Specifications for Chemical Use in -250°F to 800°F Temperature Range

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ASTM B381 Titanium Grade 2 Long Weld Neck Flange with Complete Specifications for Chemical Use in -250°F to 800°F Temperature Range

ASTM B381 Titanium Grade 2 Long Weld Neck Flange with Complete Specifications for Chemical Use in -250°F to 800°F Temperature Range

ASTM B381 Titanium Grade 2 Long Weld Neck Flange with Complete Specifications for Chemical Use in -250°F to 800°F Temperature Range

Industrial Piping System Titanium Flange

ASTM B381 Titanium Flange

Grade 2 RFWN Titanium Flange

ASTM B381 Titanium Grade 2 Long Weld Neck Flange with Complete Specifications for Chemical Use in -250°F to 800°F Temperature Range

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