詳細說明
需以下直縫焊管：
350 8.0mm L245 GB/T9711.1 524.92m; 400 8.0mm L245 GB/T9711.1 395.12m;
450 8.0mm L245 GB/T9711.1 399.02m; 500 8.0mm L245 GB/T9711.1 127.68m;
600 8.0mm L245 GB/T9711.1 160.54m; 700 10.0mm L245 GB/T9711.1 89.92m;
800 10.0mm L245 GB/T9711.1 61.66m; 900 10.0mm L245 GB/T9711.1 319.7m;
1000 10.0mm L245 GB/T9711.1 29.1m.
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