NOTE- IS: · 1m TABLE 10 WELDING NECK FLANGES (Clausts alld IS. 63ft • It71 TABLE 11 PLATE FLANGES FOR WELDING. NOM SIZE, FLANGE, RAISED FACE, DRILLING, NECK. D, b, h1, d4, f, BOLT NO, NO. d2, K, d3, h2, r. , , 26, 70, , 5, M27, S2, 30, , , Phone: + Specification For Flanges. Flanges. As per B.S 10 Flanges. Welding Pressure. 10 Kgs. / cm2 equivalent. ND 10/IS: T/

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Values other steels will be included when available. The term integralflange applies to flanges integralwith pipes, valves and2. For alloy steel studs or bolts, nuts of a similar steel, If carbon steel is used, it shall have but of a different qrade shall be used. IlSperification for carbon stw! Pressure Pressure Allowable Allowable Other ratings at primary service Gmperature, ratings at any other temperature, rS II T,stress value at primary service temperaturt- stress value at any temperature, 7, properties Proper9 are given below: Carbon and Carbon Matzganese Steele 1.

However, a quality factor of 0. If repairs by welding arc carried out, the castings shou! NOTE 2 – The minimum tensile strength been specified in the relevant specifications.

Where machining is carried out it may be either by spot facing at the bolt holes or by back facing at the option of the manufacturer. Ilangcs the bolt holes shall be drilled off centres. Outside Diameter D Machined Up to nun inclusive Over Over mm to mm inclusive mm lo mm inclusive f f 1 mm 1.


Flanges not integral Machined at Back. Nominal SizeA continuous produced by a 3 mm radius round-nosed tool approximately 1. Where there ls no application standard the method of attachment shall be the subject of agreement between the purchaser and the manufacturer.

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These id Abe screwed in 6 shall as agreed be prepared theto between7. The purchaser shall specify the weld preparatio? The thickness of the portion of the flange falnges connects it to the pipe should be not less than the pipe thickness nor more than 3 mm thicker.

If the difference is more than 3 mm, it may be ncgotiatcd in a slope of 1 in 5. He shall be at liberty to reject any material which does not comply with the requirements of this. They shall be cleaned out to sound metal before welding, and shall be submitted to the purchasers inspector for approval in this condition, after which they may be welded if the purchaser so agrees.

After welding, flanges shall be heat-treated, except that welds required for finish- and appearances dlanges need not be heat treated, if approved by the purchaser. When the welding of defects is permitted, the welding rod shall be such as to produce a weld having characteristics similar to the parent metal.


Alloy steel flanges shall be marked with the symbols designated in Table 1.

For details reference may be made to IS: The ISI Mark on products covered by an Indian Standard conveys the assurance that they have been produced to comply with the requirements of that standard under-a well-defined system of inspection, testing and qualit control which is devised and supervised by ISI and operated Ly the producer.

Details o P conditions under which a licence for the use of the ISI Certification Mark may be granted to manufacturers or processors, may be obtained from the Indian Standards Institution.

Slipon Flanges Hub Without Hub Type) IS:6392,ANSI B16.5,BS10

The type of protector and method of attachment shall be approved by the purchaser. All dimensions in millimetres. C 70 80 80 80No.

SIZE10 15 20 2. All dimckonr N–Far in millimetres. All dimensions in millimctres. Ail dimensions in millimetres. Use this table also for nominal sizes 6 to 65 mm for 1. Norm — The two types of Ranges shown arc alternatives at the option