HG 21537.5-1992 Carbon steel stuffing box for pipe (PN0.6) HG21537.5-1992 standard download decompression password: www.bzxz.net
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Carbon steel stuffing box for pipe HG 21537. 5--92 1 Subject content and scope of application This standard is for the sealing device of detachable internal extension pipes in chemical, petroleum, pharmaceutical and other industrial equipment. Its nominal pressure PN≤0.6MPa is suitable for medium temperature-200C occasions. 29 Type, basic parameters and size The basic parameters and dimensions of the structural type of this standard are shown in the figure below and Table 2-1~2. DNS Stud See Table 22 Same as part number 3 Same as part number 3 257273 Gland stud QuantityDiameter Table 2-1 See description GB 898--88A type GB6170-86 GB 97. 185 Table 2-2 Basic packing 13×13 25×25 22×22 3 Technical requirements 3.0.1 After the stuffing box is assembled, it shall be subjected to water pressure test together with the equipment. The test pressure and tightness shall be in accordance with the equipment assembly drawing. 3.0.2 The mechanical properties and materials of stud bolts and nuts shall be in accordance with the national standards of 6.8 and 6 respectively, and the mechanical properties of washers shall be 140HV. 32 The packing shall be soft packing, which can be selected according to the operating requirements and refer to Appendix II, 4. 0. 1 and shall be indicated on the equipment assembly drawing. bzxz.net 4.0.2 Marking example The carbon steel packing box for pipes with a nominal diameter of DN50mm is marked as: packing box PNO.6DN50HG21537.5--92--4 The various specifications of packing boxes in this standard shall be marked according to the provisions of Table 4.0.3 when selected. 4.0.31 marking. Specified marking Stuffing box Stuffing box Stuffing box Stuffing box Stuffing box Stuffing box Stuffing box HG 21537.5-92-1 HG 21537.5-92-2 HG21537.5-92—3 FIG 21537.5--92--4 HG 21537.5--92-5 HG 21537.5 --92-- 6 HG 21537.5--92--7 HG 21537. 5--92--8 HG 21537. 5--92--9 HG 21537.5--92--10 Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.