The production of SG3 type PVC resin has the problem of low polymerization temperature and long cycle time. Compared with Type 5 PVC resin, the production time per pot increased by 60 minutes. Yuhuan Aerospace technical personnel carried out technical research on shortening the polymerization reaction time of SG3 type PVC resin, and carried out mass production in September last year. All the quality indicators were all qualified, and the reaction time per pot could be shortened by 40 minutes.
Quenched And Tempered Steel Bar
Quenched and tempered steel bar is produced by quenching and tempering which is one kind of heat treatment to get high mechanical properties and hardness. Our advantages and more services of quenched and tempered steel bar includes:
1) Wide range of diameters from 10mm to 100mm
2) Customized Length from 100mm to 12000mm
3) Good surface roughness: 0.4um to 1.5um
4) Good straightness: 0.5mm/m to 2mm/m
5) Good roundness: 80% of diameter tolerance
6) Diameter tolerance: -0.02mm to -0.06mm/h9, h10, h11
7) Matched further processing: Grinding, polishing, straightening
8) Anti-rusty package
9) Full sets of testing equipment: Surface, Dimenstion. Mechanical properties testing
10) Fast delivery time
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SHANDONG LE REN SPECIAL STEEL CO., LTD. , https://www.sdcolddrawnsteelbar.com