| Name of product | specification | Materials | Steel factory / origin | Today's price (yuan/ton) | Yesterday's price (yuan/ton) | Change (yuan/ton) |
| Welded pipe | 6 points/2.5mm | Q235 | Youfa | 3770-3780 | 3770-3780 | constant |
| Welded pipe | 1 inch/3.0mm | Q235 | Youfa | 3680-3690 | 3680-3690 | constant |
| Welded pipe | 1.5 inch/3.25mm | Q235 | Youfa | 3680-3690 | 3680-3690 | constant |
| Welded pipe | 4 inch/3.75mm | Q235 | Youfa | 3650-3660 | 3650-3660 | constant |
| Welded pipe | 6 inch/4.0mm | Q235 | Youfa | 3750-3760 | 3750-3760 | constant |
| Welded pipe | 1 inch/3.0mm | Q235 | Lida | 3850-3860 | 3850-3860 | constant |
| Welded pipe | 1.5 inch/3.25mm | Q235 | Lida | 3780-3790 | 3780-3790 | constant |
| Welded pipe | 3 inch/3.0mm | Q235 | Lida | 3740-3750 | 3740-3750 | constant |
| Welded pipe | 8 inch/5.0mm | Q235 | Lida | 4010-4020 | 4010-4020 | constant |
| Seamless tube | 76*4.5 | 20# | Tianjin | 4650-4700 | 4650-4700 | constant |
| Seamless tube | 108*4.5 | 20# | Tianjin | 4700-4750 | 4700-4750 | constant |
| Seamless tube | 114*4.5 | 20# | Angang | 4800-4850 | 4800-4850 | constant |
| Seamless tube | 159*5 | 20# | Angang | 4700-4750 | 4700-4750 | constant |
| Seamless tube | 219*8 | 20# | Angang | 4800-4850 | 4800-4850 | constant |
| Seamless tube | 377*10 | 20# | Baogang | 6200-6250 | 6200-6250 | constant |
| Seamless tube | 426*12 | 20# | Baogang | 6300-6350 | 6300-6350 | constant |
In the clinical medical experiments usinghuman venous blood as specimensome take the serum from the specimen as the experimental object.The blood collection tubes suitable for this type of medical tests are called serum blood collection tube.
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