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On 23, April, we received an inquiry from Bolivia. This client sought for 400 pieces carbon steel 180 degree elbow in carbon steel with simple drawing attached.

180 Degree elbow is our products. Thus we offered our competitive quotation based on the drawing. Two months later, the customer showed us more accurate drawing, together with many photos showing the details of the elbow that they wanted. We inspected all the information offered updated quotation fulfilling customer’s requirements.

After reviewing our quotation, the client placed the order. And after reviewing our sample, we manufactured in quantity.

We took very detailed photos of the sample to make sure that’s what our client want.

What is 180 Degree Elbow

180 Degree elbow is a pipe fitting that bends the pipeline by 180 degrees. It is used when a large directional change is needed or when a pipeline needs to be reversed without creating back flow.

According to the bending radius, 180 degree elbow  will be divided two types, which are long radius (LR) and short radius (SR). As the weld type, there are seamless are welded elbow. Usually, seamless butt weld elbow is more expensive than welded due to the good property.

Dimension of ASME B16.9 180 Degree Elbow

ASME B 16.9 is set by the American Society of Mechanical Engineers. This standard governs scope, pressure ratings, size, marking, material, fitting dimensions, surface contours, end preparation, design proof tests, production tests, and tolerances.

180 Degree elbow produced according to ASME B16.9 have a wide range of sizes ranging 1/2 to 24. Common wall thickness pressure levels include Sch5s, Sch10s, Sch10, Sch20, Sch30, Sch40s, STD, Sch40, Sch60, Sch80s, XS, etc. Among them, the most commonly used are STD and XS.

Size Range	1/2″ – 24″ / DN15 – 600
Thickness Schedule	SCH 10, 20, 40, STD, XS, 80, 100, 120, 140, 160, XXS
Standard	ANSI / ASME B16.9

Nominal Size		Outside Diameter at Bevel	Center to Center		Back to Face
			180 DEG Returns
DN	NPS	OD	O		K
			LR	SR	LR	SR
15	1/2	21.3	76	–	48	–
20	3/4	26.7	76	–	51	–
25	1	33.4	76	51	56	41
32	1-1/4	42.2	95	64	70	52
40	1-1/2	48.3	114	76	83	62
50	2	60.3	152	102	106	81
65	2-1/2	73	190	127	132	100
80	3	88.9	229	152	159	121
90	3-1/2	101.6	267	178	184	140
100	4	114.3	305	203	210	159
125	5	141.3	381	254	262	197
150	6	168.3	457	305	313	237
200	8	219.1	610	406	414	313
250	10	273	762	508	518	391
300	12	323.8	914	609	619	467
350	14	355.6	1067	711	711	533
400	16	406.4	1219	813	813	610
450	18	457	1372	914	914	686
500	20	508	1524	1016	1016	762
550	22	559	1676	1118	1118	838
600	24	610	1829	1219	1219	914

Material

180 Degree elbow is made of different materials,stainless steel, carbon steel and alloy steel, depending on the application and the environmental factors.

Carbon Steel 180 Degree Elbow

CHEMICAL

LIMITS

C

Mn

P

S

Si

Cr

Mo

Ni

Cu

Cb

V

ASTM A234 WPB

MIN

0.29

0.10

MAX

0.30

1.06

0.050

0.058

0.40

0.15

0.40

0.40

/

0.08

Stainless Steel Grades

CHEMICAL	LIMITS	C	Mn	P	S	Si	Ni	Cr	Mo	N	Cu
ASTM A403 WP304	MIN						8.0	18.0
	MAX	0.08	2.00	0.045	0.030	1.00	11.0	20.0
ASTM A403 WP316	MIN						10.0	16.0	2.00
	MAX	0.08	2.00	0.045	0.030	1.00	14.0	18.0	3.00
ASTM A403 WP904L	MIN						23.00	19.00	4.00		1.00
	MAX	0.02	2.00	0.045	0.035	1.00	28.00	23.00	5.00	0.10	2.00
ASTM A403 WP31254	MIN						17.50	19.50	6.00	0.18	0.50
	MAX	0.02	1.00	0.030	0.010	0.80	18.50	20.50	6.50	0.25	1.0
ASTM A403 WP321	MIN						9.00	17.00
	MAX	0.08	2.00	0.045	0.030	1.00	12.00	19.00

Duplex Stainless Steel Grades

CHEMICAL	C	Mn	P	S	Si	Cr	Ni	Mo	N	Cu
ASTM A815 UNS 32750	0.03 max	1.2 max	0.035 max	0.020 max	0.8 max	24.0-26.0	6.0-8.0	3.0-5.0	0.24-0.32	0.5 max

Application

Petrochemical Industry
Thermal Power Generation Industry
The Pharmaceutical Industry
Food Processing Industry
Shipbuilding Industry
Chemical Industry
Nuclear Industry

22 8 月, 2024