Carbon Steel Blind Flanges

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Thabiso Steel, based in Cape Town, South Africa, stands out as a trusted manufacturer and supplier of top-notch steel components tailored for a variety of industrial applications. One of their key offerings is the Carbon Steel Blind Flange, an essential piping accessory designed to effectively seal the ends of pipelines, valves, or openings in pressure vessels. These flanges are crafted to comply with international standards like ASME, ANSI, and DIN, guaranteeing durability, a precise fit, and reliable pressure containment. Thabiso Steel is dedicated to providing products that adhere to stringent technical specifications and quality standards, catering to clients in sectors such as petrochemical, construction, water treatment, and general industry.

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CS Blind Flange

Blind Carbon Steel Flanges

LTCS Blind Flanges

What is Carbon Steel Blind Flanges?

The Carbon Steel Blind Flanges are produced from carbon-based steel grades, including ASTM A105, A350 LF2, or other appropriate materials based on specific application requirements. They boast impressive strength and toughness, with typical tensile strength ranging from 485 to 620 MPa and a yield strength of about 250 MPa. These flanges are designed to perform well under moderate to high pressure and temperature conditions. Their resistance to corrosion can be improved through coatings or by choosing particular grades. Available in a variety of pressure classes (from 150 to 2500) and dimensions, these flanges can also be machined to feature threaded, raised face, or RTJ designs.

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Carbon Steel Blind Flanges Specification

Material Test Certificates (MTC) as per EN 10204 3.1 and EN 10204 3.2, Test Certificates certifying NACE MR0103, NACE MR0175
Specification	ASTM A694 / ASME SA694
Size Chart	1/2″ (15 NB) to 48″ (1200NB) DN10~DN5000
Standards	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 S44, ISO70051, JISB2220, BS1560-3.1, API7S-15, API7S-43, API605, EN1092
Pressure Rating ANSI	Class 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS
Pressure Calculation in DIN	6Bar 10Bar 16Bar 25Bar 40Bar / PN6 PN10 PN16 PN25 PN40, PN64
UNI	6Bar 10Bar 16Bar 25Bar 40Bar
EN	6Bar 10Bar 16Bar 25Bar 40Bar
Coating	Oil Black Paint, Anti-rust Paint, Zinc Plated, Yellow Transparent, Cold and Hot Dip Galvanized
Test Certificates	EN 10204/3.1B Raw Materials Certificate 100% Radiography Test Report Third Party Inspection Report, etc
Production Technique	Forged, Heat treated and machined
Connect Type/ Flange Face Type	Raised Face (RF), Ring Type Joint (RTJ), Flat Face (FF), Large Male-Female (LMF), Lap-Joint Face (LJF), Small Male-Female (SMF), Small Tongue, Large Tongue & Groove, Groove
Special design	As per your drawing AS, ANSI, BS, DIN and JIS 15 NB (1/2″) to 200 NB (8″) Equal and Reducing Configurations
Test	Direct-reading Spectrograph, Hydrostatic testing machine, X-ray detector, UI trasonic flaw detector, Magnetic particle detector
Equipment	Press machine, Bending machine, Pushing Machine, electric bevelling machine, Sand-blasting machine etc
Manufacturer of	ANSI DIN, GOST, JIS, UNI, BS, AS2129, AWWA, EN, SABS, NFE etc. BS Flange, EN Flange, API 6A Flange, ANSI Flange, ASME Flange, DIN Flange, EN1092-1 Flange, UNI Flange, JIS/ KS Flange, BS4504 Flange, GB Flange, AWWA C207 Flange, GOST Flange, PSI Flange B.S: BS4504 , BS3293, BS1560, BS10 AS 2129: Table D; Table E; Table H ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings ANSI : ANSI B16.5, ANSI B16.47(API605), MSS SP44, ANSI B16.36, ANSI B16.48 ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48 American standard (ANSI) German (DIN) British standard (BS) DIN: 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 ASTM A694 Ff42 Carbon Steel Flanges The other standard: AWWA C207; EN1092-1, GOST12820, JIS B2220; KS B1503, SABS1123; NFE29203; UNI2276
Grades	Carbon Steel A105, A36,is2062, LF2, F42, F52, F56, F60, F65, F70, F80,

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We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.

Top Manufacturer and Supplier of Carbon Steel Blind Flanges in Cape Town, South Africa

Carbon Steel Blind Flanges are commonly utilized to terminate or isolate sections of piping systems. You’ll find them in applications like pressure vessel closures, high-pressure pipelines, heat exchangers, and storage tanks across industries such as oil and gas, chemical processing, power generation, and marine. They’re particularly well-suited for systems that require regular maintenance, pressure testing, or potential expansion, as they provide easy access once unbolted. With their sturdy construction and versatility, these flanges are perfect for both above-ground and underground installations.

Carbon Steel Blind Flanges Pressure Rating

ASME/ANSI B 16.5	Blind Flange
PRESSURE CLASS	150, 300, 400, 600, 900, 1500, 2500
ASME/ANSI B 16.47	Blind Flange [Series A & B],Welding Neck Flange
PRESSURE CLASS	75, 150, 300, 400, 600, 900
ASME/ANSI B 16.36	Blind Flange
PRESSURE CLASS	300, 400, 600, 900, 1500, 2500
PRESSURE CLASS	PN 2.5 TO PN 40
BS 4504[PART 1]	Hubbed Slip-On
PRESSURE CLASS	PN 2.5 TO PN 400
BS 1560 BOSS	Hubbed Slip-On Hubbed Threaded
PRESSURE CLASS	150, 300, 400, 600, 900, 1500, 2500
BS10	Plate Slip-On Flange, Slip-On Boss Flange
TABLE	D, E, F, H
DIN FLANGES	DIN 2527, 2566, 2573, 2576, 2641,2642, 2655, 2656, 2627, 2628, 2629, 2631, 2632, 2633, 2634, 2635, 2636, 2637,2638, 2673
PRESSURE CLASS	PN 6 TO PN 100

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Types of Carbon Steel Blind Flanges

Carbon Steel BLFF Flange

Carbon Steel Raised Face Blind Flange

Carbon Steel BLRF Flanges

Carbon Steel BLRTJ Flange

CS Flat Face Blind Flanges

Carbon Steel Blind Pipe Flanges

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Uses of Carbon Steel Blind Flanges

Carbon steel blind flanges are also used extensively in many industries because they are tough and can withstand high pressure. They are mainly employed to block or seal the ends of pipelines for safety reasons during maintenance or repair. They are used in oil and gas, petrochemical, power plants, and water treatment plants. These flanges are best suited for pipeline pressure and flow testing, as they are leak-proof and allow future expansion access. They are cost-effective and corrosion-resistant, which makes them the most sought-after in industrial use.