Technical

Forged carbon steels conforming to ASTM A266/ ASME SA-266 may be applied to the manufacture of various pressure vessel components. These pressure vessel components cover heat exchanger headers, tanks, tube sheets, nozzles, and hubbed branches, etc, which are intended for ASME Boiler and Pressure Vessel Code applications. The ASME BPVC Section II Part D has specified the application of ASTM …

ASTM A266/ A266M is the standard specification for carbon steel forgings for pressure vessel components. It covers four grades of carbon steel forgings for boilers, pressure vessels, and associated equipment: Grade 1, Grade 2, Grade 3, and Grade 4. The UNS number designation for each grade is K03506 [Grade 1], K03506 [Grade 2], K05001 [Grade 3], and K03017 [Grade 4], …

Flanges, made in accordance with American standards such as ASME B16.5, ASME B16.47, ASME B16.36, ASME B16.48, AWWA C-207, are generally designated in “classes” by “ratings” according to their design pressure. The flange pressure rating is expressed in “psi” or, as a common practice, in “pounds”. When we speak for example of “a 300 pound flange”, it is however preferable …

The forged carbon steel piping components, either flanges or fittings, made from ASTM A105 materials can be applied to ASME B31.1 power piping. The allowable stress values for power piping shall be determined in accordance with 102.3.1 of Code B31.1. These values are generally consistent with those assigned for Section I, power boilers. The maximum allowable stress values, S, in …

What’s the flange facing finish? Pipe flanges manufactured in accordance with ASME B16.47, either Series A or Series B, welding neck or blind, may be furnished with 3 types of flange facings: raused face(RF), flat face(FF), or ring joint face(RTJ). Similar to ASME B16.5 flanges, the finish of the gasket contact faces shall be judged by visual comparison with Ra …

Shijiazhuang Metalsin is a professional manufacturer of forged steel flanges and holds a large volume of ASTM A105 flanges available in stock. The entire manufacturing processes are presented as follow: Step 1: raw material preparation. These A105 billets are procured from a prominent steel mill TISCO. The production process of the steel is under the supervision of TUV inspectors for …

Forged flanges, forged fittings and other forgings made of ASTM A105 can be applied to process piping in accordance with ASME B31.3. The basic allowable stresses in tension for ASTM A105 at elevated temperatures are tabulated in Table A-1 below for design calculation. Allowable stresses in shear shall be 0.80 times the basic allowable stresses in tension, and allowable stresses …

The tensile strengths and yield strengths of ASTM A105/ ASME SA-105 forgings at elevated temperatures are provided in ASME Boiler and Pressure Vessel Code Section II Part D. These values, which are tabulated in below two tables, are provided for use in design calculations. Neither ASME Codes nor ASME material specifications require elevated temperature testing for tensile strengths and yield …

Forgings made from ASTM A105 or ASME SA-105 materials, either forged flange or forged fittings, can be applied to the ASME Boiler and Pressure Vessel Codes (BPVC). The ASTM A105/ ASME SA-105 carbon steel forgings are designated with an UNS number K03504. It has a P-number of 1 and Group number of 2. It has an accurate equivalent ASME SA-181 …

What’s the flange facing finish? The facing finish or face finish of a pipe flange manufactured in accordance with ASME B16.5 refers to the smoothness or roughness of the facing surface. In a bolted flange joint, the flange face is in direct contact with the gasket. As the bolting is tightened, the softer gasket material flows into the minor machining …

Technical Drawings ASME B16.5 Class 2500 RTJ Facing Dimensions *Table 2500#-1, all dimensions are in mm. *Table 2500#-2, all dimensions are in mm. *Click to view the RTJ facing dimensions for pressure rating Class 150 through Class 2500.

Technical Drawings ASME B16.5 Class 1500 RTJ Facing Dimensions *Table 1500#-1, all dimensions are in mm. *Table 1500#-2, all dimensions are in mm. *Click to view the RTJ facing dimensions for pressure rating Class 150 through Class 2500.