Solder strip brands VPR1, VPR2, VPR4 and VPR7. General technical conditions
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Solder alloys for soldering of hard-alloy metal-cutting tool. Specifications.
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Tin-zinc, silicon-manganese bronze and brass wires. Dimensions and grade (restriction as per GOST 5221-77, GOST 5222-72, GOST 1066-80).
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