7 Permanent weld backing bars, consumable inserts and nonconsumable insert rings are not permitted without prior written approval from SECCO.
事先没有赛科公司的书面批准，
有永久焊接的支撑杆、熔化性嵌条和可熔嵌环。
7 Permanent weld backing bars, consumable inserts and nonconsumable insert rings are not permitted without prior written approval from SECCO.
事先没有赛科公司的书面批准，有永久焊接的支撑杆、熔化性嵌条和可熔嵌环。
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网资源自动生成，部分未经过人工审核，其表达内容亦
代表本软件的观点；若发现问题，欢迎向我们指正。
