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<FONT face=宋体> <P><A href="http://www.mengcunrenkong.com/">人孔</A> <A href="http://www.mengcunrenkong.com/">www.mengcunrenkong.com</A></P> <P><!--EndFragment-->一、不锈钢人孔不锈钢常压人孔和手孔材料应符合JB/T 4735-1997第4章中的有关规定。非不锈钢常压人孔和手孔材料应符合GB150 1 998第4章和附录A以及《压力容器安全技术监察规程》(1999)第二章中的有关规定,其中低温人孔和手孔还应符合GB 150 1998附录C中C2的规定。<BR>Stainless steel atmospheric manhole hole and hand hole with material requirements:<BR>A stainless steel atmospheric manholes and hand holes material shall comply with the relevant provisions of the JB / T 4735-1997 Chapter 4. Non-stainless steel atmospheric manholes and hand holes material should be consistent with the GB150 1 998 and Appendix A "Pressure Vessel Safety Supervision Regulations" (1999), the relevant provisions of Chapter II, in which low-temperature manholes and hand holes should comply with the provisions of GB 150 1998 Appendix C C2.<BR>二、不锈钢人孔用各种钢材标准如下:<BR> 1 Q235-A.F、Q235-B;20 R、16MnR、15CrMoR; 16MnDR、09MnNiDR钢板应分别符合GB/T 3274、GB 6654和GB 3531的规定。OOCr19N110、OCr18N19、OCr18NilOTi、OOCr17N114M02、OCr17N112M02高合金钢板应符合GB/T 4237的规定。<BR> 2 不锈钢人孔用20号钢无缝钢管应符合GB/T 8163或GB 9948的规定;15CrMo和16Mn无缝钢管应分别符合GB 9948或GB 6479的规定; OOCr19Nil0、 OCr18N19、 OCr18NilOTi、 OOCr17N114M02、OCr17N112M02高合金无缝钢管应符合GB/T 14 976的规定。<BR>Stainless steel manhole with a variety of steel standards are as follows:<BR> 1 Q235-A. F, Q235-B; 20 R, 16MnR, 15CrMoR; 16MnDR 09MnNiDR steel plate shall conform to GB / T 3274, GB 6654 and GB 3531 provisions. OOCr19N110, OCr18N19, OCr18NilOTi, OOCr17N114M02, OCr17N112M02 high alloy steel plates shall conform to the provisions of GB / T 4237.<BR> 2 stainless steel manhole with No. 20 steel seamless steel pipe shall conform to the provisions of GB / T 8163 or GB 9948; 15CrMo and 16Mn seamless steel pipe shall conform to the provisions of GB 9948 GB 6479; OOCr19Nil0, OCr18N19, OCr18NilOTi, OOCr17N114M02, OCr17N112M02 high alloy seamless steel pipe shall conform to the requirements of GB / T 14 976.<BR> 3 Q235-A.F型钢、Q235-A紧固零件材料应符合GBlT 700昀规定。<BR> 4 25号、35号和45号钢紧固零件材料按照GBlT 699的规定。<BR> 5 20号、35号钢锻件按照JB 4726标准的规定。<BR>三、不锈钢人孔用不锈钢板材和食品级硅胶、耐酸耐碱耐高温密封圈应分别符合GB/T 3985和GB/T 539的规定。<BR> 3 Q235-A. F section steel, Q235-A fastening parts and materials shall comply with the the GBlT 700 Yun provisions.<BR> 425, No. 35 and No. 45 steel fastening parts and materials in accordance with the provisions of the GBlT 699.<BR> 520, No. 35 steel forgings in accordance with the provisions of the standard JB 4726.<BR>, Stainless steel manhole with a stainless steel plate and food-grade silicone, acid and alkali resistant high temperature seals should be in line with GB / T 3985 and GB / T 539 provisions.<BR>四、耐油和不耐油橡胶板应符合GB/T 5574的规定。采用GB/T 5574中拉伸强度大于或等于10MPa,扯断伸长率大于或等于350%,公称硬度60—70 IRHD(国际硬度)的光面板材料。<BR>Fourth, the oil and non-oil and rubber board shall comply with the provisions of GB / T 5574. Adopt GB / T 5574 tensile strength greater than or equal to 10MPa, elongation at break of greater than or equal to 350% of nominal hardness of 60-70 IRHD (International hardness) light panel material.</FONT></P> <P><A href="http://www.mengcunrenkong.com/">人孔</A> <A href="http://www.mengcunrenkong.com/">www.mengcunrenkong.com</A></P> <P><!--EndFragment--></P>
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