GB/T 2972-1991 Test method for copper sulfate of zinc coating on galvanized steel wire

This standard specifies the principle, test sample, test solution, test conditions and steps, endpoint judgment and pass/fail judgment of the zinc coating of galvanized steel wire. This standard is applicable to hot-dip galvanized steel wire, and electro-galvanized steel wire can also refer to this standard. GB/T 2972-1991 Test method for copper sulfate on zinc coating of galvanized steel wire GB/T2972-1991 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Test Method of Copper Sulfate on Zinc Coating of Sugar-zinc Steel Wire
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/2972—9
Chemical Type 1 29r?H.
This standard sets out the principles of the test method in detail, the test is difficult to complete, the test parts are in step-by-step stimulation, the end point of the test is suitable for the evaluation of the training wire, the chain needle pin wire can be more than this standard product, 2. The test method version will be tested within the specified time, a number of generations of connected systems will be placed in the tax bath, and the quick reaction will be carried out to judge whether the new translation is feasible, 3. The test should be carried out in a relatively sharp environment, and the length should not be less than 150 m3.? The test piece table and the heart protection can not be any non-test limit test two hand milk line but the year silk teacher stock sample can be identified by the monitoring process does not need
3 Wu I test first with the text, the sound of the oil science can be used when the chemical preparation light 1 remove the protective dirt change oil non, hand with clean request dyeing and washing tax grease put clean market replacement, 4 Kai test solution
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a.1. Tour catalyze about 10 powdered home contained Cu(0) ratio pure) still sample static light 24hE violation retreat: liquid chemical dig about chemical dig amount shot through
every 0 fall was purchased 1z powdered slightly acid COCOH chemical exploration, 2+ The risk of over-building 4.2 households promote the degree of 3-2 heart called the test change to 1.16 catties-1-1, the measurement should be 1.100~1-200, the amount is large when the case is used to water transfer liver, the ratio of the benefit example hours after the teaching selection is completed gradually, .3 test time this test range I for plastic light and steel wind corresponding containers, the commercial high state is not less than 100mm, the inner light: when the small mm wire is not less than Mmm for the diameter is not less than 1.fm of course not less than mm, the most can be proved when the disassembly type with, the lightness of the fall is solved to reach 5 should be carried by the king to wear 5 test cases and steps
will be full of the sample light after the slow placement of the fee is 8 ± 2 (test bath wave ratio, this! Not accurate fall rolling, the sample is not the only national technical pipe 1 on
199201 effective
GR/T 2072.·91
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61 test the good of the new out of the state of the need to reduce the reputation of the state, for transport to some points, 62 the following situation with the same point:
refracted light flash attached semi-production but less. product,
The production ratio is 016% of the actual chemical pre-made rubber, and there is a total of active gas production! In the prohibition of 0r. With the new list of
combined examination, the selection of
Radisson's car operation and the usual hope that the product is marked with the test number, no final calculation heart selection. Add a clear,
academic standard mountain when the People's Republic of China registered the entire industry emperor virtual out, this standard by the upstream of the second steel plant, the establishment of the standard research institute is responsible for the main drafter of this environmental standard a month ago, the business can be suppressed for a long time,
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