Lord Fin Tube--T.S. Industrial Co.,Ltd

ASTM A556/A556M Standard Specification for Seamless Cold-Drawn Carbon Steel Feedwater Heater Tubes 1.  ASTM A556/A556M Scope 1.1 This specification 2 covers minimum-wall-thickness, seamless cold-drawn carbon steel tubes including bending into the form of U-tubes, if specified, for use in tubular feedwater  heaters. 1.2 The tubing sizes covered shall be 5/8 to 1 1/4 -in. [15.9 to 31.8-mm] outside diameter, inclusive, with minimum wall thicknesses equal to or greater than 0.045 in. [1.1 mm]. 1.3 Optional supplementary requirements are provided, and when desired, shall be stated in the order. 1.4 The values stated in either inch-pound units or SI units are to be regarded separately as the standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently ofthe other. Combining values from the two systems may result in nonconformance with the specification. The inch-pound units shall a

What is membrane water wall panel? The Membrane water wall pane l is the main heating part of the boiler, which is composed of several rows of steel tubes, distributed around the boiler furnace. Its interior is flowing water or steam, and the outside receives the heat from the flame in the boiler furnace. It mainly absorbs the radiant heat of high-temperature combustion products in the furnace, in which the working medium rises and evaporates. Membrane water wall panel refers to the water wall composed of a gas tight pipe panel welded by flat steel and tubes. The membrane water wall can ensure the furnace has good tightness and can significantly reduce the air leakage coefficient of the furnace and improve the combustion conditions in the furnace for negative pressure boilers. The utility model can increase the effective radiation heating area, thereby saving the steel consumption. Advantages of Membrane water wall panel (1) The membrane water wall has the most complete protective effe