Carbon Steel Weldneck Flanges Manufacturer and Supplier in Jakarta, Indonesia

Ismail Flanges is a reliable manufacturer and supplier of high-quality Carbon Steel Weldneck Flanges located in Jakarta, Indonesia. With years of experience, we focus on producing durable and precisely made flanges that meet international standards like ANSI, ASME, and DIN. Our flanges are widely used in the oil and gas, petrochemical, and power generation industries, recognized for their strong construction and dependability. At Ismail Flanges, customer satisfaction, timely delivery, and consistent quality are our main goals. We serve both local and international markets with tailored solutions for challenging piping and pressure vessel applications.

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CS Weld Neck Flanges

Weld Neck Carbon Steel Flanges

LTCS Welding Neck Flange

Carbon Steel Weldneck Flanges are usually made from carbon steel grades like ASTM A105 or A350 LF2. These materials include carbon (0.23–0.27%), manganese (0.6–1.05%), and small amounts of phosphorus and sulfur. The mechanical properties feature a minimum tensile strength of 485 MPa, a minimum yield strength of 250 MPa, and an elongation of 22% or more. These flanges undergo heat treatment to improve durability and toughness, which makes them suitable for high-pressure and high-temperature settings. Strict quality control guarantees optimal performance in critical applications.

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Carbon Steel Weldneck Flanges Specification

Carbon Steel Weld Neck Flanges Standard	ASTM A105, A350 / ASME SA105, SA 350 ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges
Carbon Steel Weld Neck Flange Dimensions	B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN
CS Weld Neck Flanges Size	1/2″ (15 NB) to 48″ (1200NB) DN10~DN5000)
Carbon Steel Weld Neck Flanges Class/Pressure	150# 300# 600# 900# 1500# 2500# PN6 PN10 PN16 PN25 PN40 PN64
Flange Face Type	Flat Face (FF), Raised Face (RF), Ring Type Joint (RTJ)
SA 105 Carbon Steel Weld Neck Flanges Marking	All Flanges are marked as follows: Grade, Standard, Thickness, Heat No. (Or according to the customer’s request.)
Delivery Time	7-15 working days as usual, It will based on the detailed order quantity.
Payment Terms	Paypal, Western Union, T/T (Telegraphic Transfer or Wire Transfer), L/C or Trade Assurance 30% deposit & balance before shipping
Free Sample	Yes if we have in stock
Carbon Steel Weld Neck Flange testing reports	EN 10204/3.1B NACE 3.1 Certification Mill Test Certification ISO 17025 Standards by a Government of India approved Laboratory Raw Materials Certificate 100% Radiography Test Report Third Party Inspection Report and others as required Positive Material Identification is done on all raw material procured at Priminox Overseas
SA 105 Carbon Steel Weld Neck Flanges Origin & Mills	Japanese, Indian, USA, Korean, European, Russian, Ukraine (Strictly No China)
Carbon Steel Weld Neck Flange Application & uses	Petroleum Chemical plant Power sector Gas Industry Hardware tools Metallurgy Machinery Construction Shipbuilding

Largest Carbon Steel Weldneck Flanges Supplier in Indonesia, Jakarta

Ismail Flanges, a leading supplier in Indonesia, Jakarta, offers an extensive selection of Carbon Steel Weldneck Flanges, including weld neck flanges, slip-on flanges, blind flanges, threaded flanges, and lap joint flanges. Designed for diverse industrial applications, our high-quality inventory and commitment to exceptional service make us a trusted choice for flange products in the region.

Contact us to get a quick quote for your requirement.

We offer These Flanges as per DIN, ISO, JIS or ANSI Standard.

Carbon Steel Weldneck Flanges are commonly used in industries that need leak-proof and high-strength piping connections. Typical applications include oil and gas pipelines, chemical processing units, power plants, shipbuilding, and water treatment facilities. Their long tapered hub allows for excellent stress distribution, making them perfect for extreme conditions involving high pressure and temperature. These flanges are welded to the pipe, providing superior strength and resistance to fatigue. They are vital components in systems where vibration, thermal expansion, and mechanical loading are concerns. Ismail Flanges ensures that every product meets strict specifications for reliability and performance in demanding environments.

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Types of Carbon Steel Weldneck Flanges

Dimensions of Carbon Steel Weldneck Flanges

Size in In	Size in Millimeter	(OD) Outer Diameter	Flange Thick.	Hub OD	Weld Neck Outer Diameter	Welding Neck Length	Bore	RF Diameter	RF Height	PCD	Weld Face
		A	B	C	D	E	F	G	H	I	J
1/2	15	95	12.7	38	21.3	51	Refer Note	34.9	2	66.7	1.6
3/4	20	115	14.3	48	26.7	56		42.9	2	82.6	1.6
1	25	125	15.9	54	33.4	60		50.8	2	88.9	1.6
1 1/4	32	135	17.5	64	42.2	64		63.5	2	98.4	1.6
1 1/2	40	155	19.1	70	48.3	67		73	2	114.3	1.6
2	50	165	20.7	84	60.3	68		92.1	2	127	1.6
2 1/2	65	190	23.9	100	73	75		104.8	2	149.2	1.6
3	80	210	27	117	88.9	78		127	2	168.3	1.6
3 1/2	90	230	28.6	133	101.6	79		139.7	2	184.2	1.6
4	100	255	30.2	146	114.3	84		157.2	2	200	1.6
5	125	280	33.4	178	141.3	97		185.7	2	235	1.6
6	150	320	35	206	168.3	97		215.9	2	269.9	1.6
8	200	380	39.7	260	219.1	110		269.9	2	330.2	1.6
10	250	445	46.1	321	273	116		323.8	2	387.4	1.6
12	300	520	49.3	375	323.8	129		381	2	450.8	1.6
14	350	585	52.4	425	355.6	141		412.8	2	514.4	1.6
16	400	650	55.6	483	406.4	144		469.9	2	571.5	1.6
18	450	710	58.8	533	457	157		533.4	2	628.6	1.6
20	500	775	62	587	508	160		584.2	2	685.8	1.6
24	600	915	68.3	702	610	167		692.2	2	812.8	1.6

Size of Carbon Steel Weldneck Flanges

Welding Neck Flange Bores (in inch)
NPS	O D	Sch 10	Sch 20	Sch 30	Std. Wall	Sch 40	Sch 60	Extra Strong	Sch 80	Sch 100	Sch 120	Sch 140	Sch 160	Double Extra Strong
1/2”	0.840	0.674			0.622	0.622		0.546	0.546				0.464	0.252
3/4”	1.050	0.884			0.824	0.824		0.742	0.742				0.612	0.434
1”	1.315	1.097			1.049	1.049		0.957	0.957				0.815	0.599
1.1/4”	1.660	1.442			1.380	1.380		1.278	1.278				1.160	0.896
1.1/2”	1.900	1.682			1.610	1.610		1.500	1.500				1.338	1.100
2”	2.375	2.157			2.067	2.067		1.939	1.939				1.687	1.503
2.1/2”	2.875	2.635			2.469	2.469		2.323	2.323				2.125	1.771
3”	3.500	3.260			3.068	3.068		2.900	2.900				2.624	2.300
3-1/2”	4.000	3.760			3.548	3.548		3.364	3.364					2.728
4”	4.500	4.260			4.026	4.026		3.826	3.826		3.624		3.438	3.152
5”	5.563	5.295			5.047	5.047		4.813	4.813		4.563		4.313	4.063
6”	6.625	6.357			6.065	6.065		5.761	5.761		5.501		5.187	4.897
8”	8.625	8.329	8.125	8.071	7.981	7.981	7.813	7.625	7.625	7.437	7.187	7.001	6.813	6.875
10”	10.750	10.420	10.250	10.136	10.020	10.020	9.750	9.750	9.562	9.312	9.062	8.750	8.500	8.750
12”	12.750	12.390	12.250	12.090	12.000	11.938	11.626	11.750	11.374	11.062	10.750	10.500	10.126	10.750
14”	14.000	13.500	13.376	13.250	13.250	13.124	12.812	13.000	12.500	12.124	11.814	11.500	11.188
16”	16.000	15.500	15.376	15.250	15.250	15.000	14.688	15.000	14.312	13.938	13.564	13.124	12.812
18”	18.000	17.500	17.376	17.124	17.250	16.876	16.500	17.000	16.124	15.688	15.250	14.876	14.438
20”	20.000	19.500	19.250	19.000	19.250	18.812	18.376	19.000	17.938	17.438	17.000	16.500	16.062
24”	24.000	23.500	23.250	22.876	23.250	22.624	22.062	23.000	21.562	20.938	20.376	19.876	19.312
30”	30.000	29.376	29.000	28.750	29.250			29.000
36”	36.000	35.376	35.000	34.750	35.250	34.500		35.000
42”	42.000				41.250			41.000

Are Custom Sizes Available for Carbon Steel Weldneck Flanges?

Yes, we offer custom sizes for Carbon Steel Weldneck Flanges to meet specific project needs. Our team at Ismail Flanges is committed to providing tailored solutions for all your requirements. For more details, contact us at sales@ismailflanges.id.

Material Testing

We are renowned for delivering products with precise, accurate dimensions. Each product undergoes thorough testing, both destructive and non-destructive, to ensure quality before being shipped to our customers.