ASME B36.10M-2004 pdf free download.Welded and Seamless Wrought Steel Pipe
1 SCOPE This Standard covers the standardization of dimen- sions of welded and seamless wrought steel pipe for high or low temperatures and pressures. The word pipe is used, as distinguished from tube, to applyto tubularproducts ofdimensions commonlyused for pipeline and piping systems. Pipe NPS 12 (DN 300) and smaller have outside diameters numerically larger than their corresponding sizes. In contrast, the outside diameters of tubes are numerically identical to the size number for all sizes.
2 SIZE The size of all pipe is identified by the nominal pipe size. The manufacture of pipe NPS 1 ⁄ 8 (DN 6) to NPS 12 (DN 300), inclusive, is based on a standardized outside diameter (OD). This OD was originally selected so that pipe with a standard OD and having a wall thickness that was typical of the period would have an inside diameter (ID) approximately equal to the nominal size. Although there is no such relation between the existing standard thickness — OD and nominal size — these nominal sizes and standard ODs continue in use as ‘‘standard.’’ The manufacture of pipe NPS 14 (DN 350) and larger proceeds on the basis of an OD corresponding to the nominal size.
3 MATERIALS The dimensional standards for pipe described here are for products covered in ASTM specifications.
4 WALL THICKNESS The nominal wall thicknesses are given in Table 1.
5 WEIGHTS The nominal weights of steel pipe are calculated val- ues and are tabulated in Table 1.
6 PERMISSIBLE VARIATIONS Variations in dimensions differ depending upon the method of manufacture employed in making the pipe to the various specifications available. Permissible varia- tions for dimensions are indicated in each specification.
7 PIPE THREADS Unless otherwise specified, the threads of threaded pipe shall conform to ANSI/ ASME B1.20.1, Pipe Threads, General Purpose (Inch). Schedules 5 and 10 wall thicknesses do not permit threading in accordance with ANSI/ASME B1.20.1.
8 WALL THICKNESS DESIGNATIONS The wall thickness designations Standard, ExtraStrong, and Double Extra-Strong have been commercially used designations for many years. As explained in the Foreword, the Schedule Numbers were subsequently added as a convenient designation for use in ordering pipe. Standard and Schedule 40 are identical for up to NPS 10 (DN 250), inclusive. All larger sizes of Standard have 3 ⁄ 8 in. (9.53 mm) wall thicknesses. Extra-Strong and Schedule 80 are identical for up to NPS 8 (DN 200), inclusive. All larger sizes of Extra-Strong have 1 ⁄ 2 in. (12.70 mm) wall thicknesses. Pipe of sizes and wall thicknesses other than those of Standard, Extra-Strong, and Double Extra-Strong, and Schedule Number were adopted from API Specification 5L. It was not considered practical to establish Schedule Numbers or new designations for them.
9 WALL THICKNESS SELECTION
When the selection of wall thickness depends primar- ily upon capacity to resist internal pressure under given 2 conditions, the designer shall compute the exact value of wall thickness suitable for conditions for which the pipe is required, as prescribed in detail in the ASME Boiler and Pressure Vessel Code, ASME B31 Code for Pressure Piping, or other similar codes, whichever gov- erns the construction. A thickness shall be selected from Table 1 to suit the value computed to fulfill the condi- tions for which the pipe is desired.ASME B36.10M pdf download.ASME B36.10M-2004 pdf free download
