1、质量证明的审查：钢厂交货一定根据用户的要求按合同约定的规范交货并提供原始质量证明书。证明书中，必须具备以下内容：
1, the quality of the review: steel delivery must be based on the user's requirements in accordance with the contract agreed to the standard delivery and provide the original quality certificate. A certificate must have the following:
1）规范要求；
1) specification requirements;
2）质量记录编号及证明证号；
2) quality record number and certificate number;
3）炉批号，技术等级；
3) batch number, technical level;
4）化学成分和力学性能
4) chemical composition and mechanical properties
；5）船级社认可证明及验船师签字。

5) the certificate of classification society and the surveyor's signature.
2、实物审查：船用钢材的交货，实物物体上应有生产厂标志等。具体有：
2, physical examination: delivery of marine steel, physical objects should have a production plant marks, etc.. Specific there:
1）船级社认可标志；
1) classification society approval mark;
2）采用油漆框出或粘贴标记，包括技术参数如：炉批号、规范标准等级、长宽尺寸等；
2) using paint frame or paste marks, including technical parameters, such as: the number of the furnace, the standard level, length and width, etc.;
3）外观光洁平顺，无缺陷。
3) smooth appearance, no defects.
热处理：热轧，正火，控轧，退火，回火＋正火，调质。 济南永亚钢铁贸易有限公司济钢代理商提供技术支持，更多精彩内容请进入：http://www.jnyygt.com，我们会倾情为您解答。
Heat treatment: hot rolling, rolling, annealing, quenching, tempering and normalizing, quenching and tempering. Provide technical support to Ji'nan YONGYA steel trade Co., Jinan agents, more exciting content, please enter: http://www.jnyygt.com, we will love to answer your questions.