钢管理化试验取样频次和验收指标的探讨

Discussion on Sampling Frequency and Acceptance Criteria of Physico-chemical Tests for Steel Tubes

指出了在我国现行某些天然气和原油管道用钢管技术条件中,理化试验取样频次不规范和某些理化性能验收指标不科学之处。从严格控制钢管质量和科学合理降低生产成本出发,并结合APISpec5L(44版)等标准的规定和我国板材、钢管生产的实际状况,提出了较为合理的钢管理化试验取样频次和部分验收指标范围。

It is identified by the co-authors that in certain prevailing technical speifications for steel pipes for builting natural gas or crude oil pipelines, the requirements for physico-chemical test sampling frenquency are not well standardized, and some acceptance criteria for physico-chemical properties are not so scientifically reasonable. Taking account of relevant requirements under applicable technical specificatons like API Spec 5L （the 44th edition）, and the current circumstances of domestic production of steel plate and tubular products, physico-chemical test sampling frequency and some acceptance target value ranges that are more reasonable for the said kind of steel pipes are proposed, aimming at further assurance of steel pipe quality, and scientifically cutting down production costs.