成人eeuss影院在线观看_亚洲天堂2019AV天堂_亚洲欧美国产日本在线视频_亚洲色区视频3页_国产av午夜福利久久_国产九一精品视频免费观看_看高清刺激免费的大片毛片_东北男男gay猛男性同志_午夜尤物激情福利_高清少妇三级精品

ISO 3738-2: 1988 《硬質(zhì)合金 洛氏硬度試驗(yàn)(A標(biāo)尺) 第2部分:標(biāo)準(zhǔn)硬度塊的準(zhǔn)備與標(biāo)定》國際標(biāo)準(zhǔn)(英文版)

International Standard ISO 3738-2:1988ISO 3738-2-1988(英文).png


Hardmetals  -  Rockwell  hardness  test (scale A) -

Part 2 :

Preparation  and calibration  of standard  test blocks


1 Scope and field of application


This part of IS0 3738 specifies  the preparation  and calibration of hardmetal  primary  standard  test blocks,  secondary  standard test blocks and working  standard  test blocks from master standard test blocks  to be used for the verification  of Rockwell hardness  testing  machines  (scale A) and indenters for testing hardmetals.

This document  should  be read in conjunction  with IS0 3738-l.


2  Reference


IS0 3738-1, Hardmetals  -  Rockwellhardness  test (scale A) - Part 1 : Test method.





在線閱讀            免費(fèi)下載
contentHeight = $(".newsContent").height(); if(contentHeight < 615){ contentHeight = 615; }