Such as the question, there is no relevant provisions of the test report of the validity of how long! Question added: I said that the metal wire tube, the general inspection report, not CQC, this did not indicate the validity period, the date of issue is June . 2006; but there is a "quality management system certification", stated The deadline is June . 2009; that we can use this product and the inspection report retrial? More
Can not be cut along the horizontal direction of the wall, the wall of the depth of the chisel should be adequate to protect the thickness of the tube, generally 25. In accordance with the norms should be in 28 days after the exclusion.
Set the iron ring of the arc (that is, longer arc) long l
The basic process of the live tube is: position confirmation --- integrated design --- slotted --- pipe --- fixed pipe --- try thread --- threading --- sealing slot. I hope I can help you. If you have more questions, you can click on ID consultation.
