Heat Exchangers

Heat exchangers are used to transfer heat from one medium to another. These media may be a gas, liquid, or a combination of both. The media may be separated by a solid wall to prevent mixing or may be in direct contact. Heat exchangers can improve a system’s energy efficiency by transferring heat from systems where it is not needed to other systems where it can be usefully used. High pressure tests are always carried out on these heat exchangers before they leave the factory. Brass, copper, M.S. and S.S. tube sheets are used. Tube sheets are also made out of mild steel, alloy steel or stainless steel and baffle plates are made out of mild steel or stainless steel. Abbtas fabricates ‘U’ Tube heat exchangers which are used in fertilizer plants, petrochemical and power project complexes. 

Fabrication of U-Tubes for Heat-Exchangers Spans at extremely Short Delivery time, even Extra long (23 Mts) is TPP BOILERS specialty. Tube Bending as per TEMA.  Tubes to any specification and any length can be supplied in extremely short time due to our wide Mother Tube Stocks.

MATERIAL GRADE	SPECIFICATION
Low Carbon & Steel Seamless	ASTM A179, DIN 17175 ST 35.8, SA 192
Low Carbon Steel Welded	ASTM A 214, ST 37.8
Low Alloy Steel - Seamless	ASTM A 199 / A213, T1, T11, T12, T22, T5, T9, DIN 17175- 15 Mo3, 16 Mo5, 16Cr Mo44, 1010 Mo910, 12 CrMo195, X12Cr Mo91,
Stainless Steel Seamless / Welded	304, 304 L,321,316,316L, 316 T, 317, 347, 347 HF4, 310 S, 446, 405, 410, S31803, UNS 83904, S 31500, X S Cr N, 189
Non Ferrous	ASTM B111, Grade 142,122,272, 260,443,687,706,715