| 56 | 无缝钢管 | DN200SCH40 | S31603 | m | GB/T14976SMLSHG20553(II系列) SCH40S |
| 58 | 无缝钢管 | DN200SCH60 | S31603 | m | S31603GB/T14976SMLSHG20553(II系列) SCH60 |
| 59 | 无缝钢管 | DN25SCH80 | S31603 | m | GB/T14976SMLSHG20553(II系列) SCH80S |
| 61 | 无缝钢管 | DN250SCH40 | S31603 | m | GB/T14976SMLSHG20553(II系列) SCH40S |
| 63 | 无缝钢管 | DN250SCH60 | S31603 | m | S31603GB/T14976SMLSHG20553(II系列) SCH60 |
| 64 | 无缝钢管 | DN300SCH40 | S31603 | m | GB/T14976SMLSHG20553(II系列) SCH40S |
| 66 | 无缝钢管 | DN300SCH60 | S31603 | m | S31603GB/T14976SMLSHG20553(II系列) SCH60 |
| 67 | 无缝钢管 | DN350SCH20 | S31603 | m | GB/T14976SMLSHG20553(II系列) SCH20 |
| 69 | 无缝钢管 | DN350SCH60 | S31603 | m | S31603GB/T14976SMLSHG20553(II系列) SCH60 |
316L不锈钢管HG20553检测标准发货