China Factory supply PM12 mining swellex bolt
Swellex Descriptions:
Swellex expandable rock-bolting system has gained wide recognition in the mining and tunneling industry. This unique rock bolt consists of a welded tube folded in upon itself, sealed at one end. It is re-expanded using a high pressure water flow provided by a special pump and adapter. The bolt is expanded inside the borehole drilled into the excavation wall. The installation process is easy and very similar to other rock bolt installation processes, making Swellex rock bolts accessible to all operators.
| Description | Bolt Type | Unit | |||||
| Pm12 | Pm16 | Pm24 | Mn12 | Mn16 | Mn24 | ||
| Type of steel | S275JR/S355MC | S355JR | |||||
| Minimum breaking load | 110 | 160 | 240 | 110 | 160 | 200 | kN |
| Minimum yield load | 100 | 140 | 200 | 90 | 120 | 180 | kN |
| Minimum elongation ** | 10 | 10 | 10 | 20 | 20 | 20 | % |
| Inflation pressure | 300 | 300 | 300 | 300 | 300 | 300 | Bar |
| Profile diameter | 27.5 | 36.0 | 36.0 | 27.5 | 36.0 | 36.0 | mm |
| Original tube, diameter | 41.0 | 54.0 | 54.0 | 41 | 54 | 54 | mm |
| Material thickness | 2.0 | 2.0 | 3.0 | 2 | 2 | 2 | mm |
| Upper bushing, diameter | 28.0 | 38.0 | 38.0 | 38 | 38 | 38 | mm |
| Inflation bushing, diameter | 30/36 | 41/48 | 41/48 | 30/36 | 41/48 | 41/48 | mm |
| Optimal hole diameters* | 35 - 38 | 45 - 51 | 45 - 51 | 35 - 38 | 45 - 51 | 45 - 51 | mm |
| Range hole diameters | 32 - 39 | 43 - 52 | 43 - 52 | 32 - 39 | 43 - 52 | 43 - 52 | mm |
| Connection diameter including welds | — | — | — | — | — | — | mm |
| Recommended collar diameter | — | — | — | — | — | — | mm |
| Bitumen coated option | Yes | Yes | Yes | Yes | Yes | Yes | |
| Plastic coated option | Yes | Yes | Yes | — | — | — | |
Henan Zhongxiang Steel Group Inc., was founded in 1997. We have more than two decades experience on this field, covering an area of 33,000 square meters, with about 300 employees, 3 production lines, 2 R & D department, and 5 quality control staff. With advanced technology, powerful processing capacity and excellent service, our products have been well recognized by our customers from domestic & overseas market.
1.Zhengzhou, handan, guizhou three processing and production bases
2.Shanghai, zhengzhou, handan, guizhou four distribution centers
3.Established seven branches in Shanghai, zhengzhou, guizhou and handan
Company Philosophy
1.Be honest with others
2.Be grateful to others
3.Cherish others
4.Benefit others
1.Pre-sale service
Provide professional suggestion from corresponding pre-sale service engineers and consulting service, customized design solution.
2.After-sale service
First time provide service available home or abroad, technical service.
3.Tracking service
Build customer service database ,track steel products working performance periodic,tracking report will be offered at first time.
4.Fast-delivery service
In order to save customer‘s precious time,we will try our best to ensure the delivery speed.
Q: Are you trading company or manufacturer?
A: We are manufacturer and tader.
Q: What's your MOQ?
A: Usually one 20'' or 40''container. But as for the first order, can be negotiated.
Q: How long is your delivery time?
A: Usually 10-25 working days after receiving deposit.
If the product out of stock,delivery time should depend on the production schedule.
Q: Can we visit you factory?
A: Warmly welcome! Once we have your schedule, we wii arrange everything in advance.
Q: Do you provide samples? Is it free or extra?
A:Available upon request.
Q: What is your terms of payment?
A: a.30% deposit by T/T,balance against B/L copy
b. be negotiable as per order quantity.
Zhongxiang steel group inc.
subsidiary:Henan Zhongxiang Heavy industry Import&Export Co., Ltd
TEL:0086-371 6889 9001
Fax:0086-371 6053 5957
Wechat:cjyxxgg
Whatsapp:+0086 188 3892 8078
ADD: NO.1041,Flat A Zensun International Plaza,Hanghaidonglu,Zhengzhou City,Henan Province,China
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