| Product Name |
Hollow bolts / Rock bolts / Hollow grouting anchor rod / grouted hollow anchor bar |
| Standards |
GB1499.2-2007 GB 50086-2015 TB/T 3209-2008 |
| Grades |
Carbon |
45#, sae1045, aisi1045 |
| Alloy |
40Cr, JIS SCr440, ASTM 5140, ISO 41Cr4 |
| Certificate |
We are SGS approved enterprise, we issue MTC and be responsible for the quality. |
| Outside diameter |
25mm, 25.4mm, 28mm, 28.3mm, 30mm, 32mm, or as per required |
| Thread standard |
ISO |
| Tolerance for OD |
+0mm/-0.2mm |
| Length |
4-12m fixed length, or as per the required |
| Surface treatment |
Black / oiled, or as per required. |
| Heat treatment |
Annealed |
| Test |
Ultrasonic test |
| Packing |
Wrapped by steel strips, wrapped by steel strips |
| Application |
Surrounding rock system shoring and supporting |
| Shipping term |
In bulk / FCL / LCL, partial shipment allowed |
| Shipping port |
Qingdao, or Tianjin port |
| Third party inspection |
Acceptable |
| Trade term |
CIF, CFR, FOB, EXW |
| Delivery time |
Within 7 days for stocks supply. |
| Paying term |
30%TT + 70% TT against copy of documents, or 30%TT + 70% LC. |
| Brand name |
Xinruyi Steel |
| Advantage & Function |
| 1. Immediately initial stage support for rock, control the surrounding rock being out of shape, guarantee the stability of surrounding rock |
| 2. Compared with solid rebar bolts, medium hollow design, makes the hollow bolts get the function of grouting pipe, it well avoids the waste and running off of mortar when grouting pipe pull out form the rock layer under traditional technology |
| 3. Mortar injecting well filled, what is more it can reaching goal of pressure mortar injection, finally the quality of project is improved |
| 4. Due to each accessories or parts effecting, the bolt neutral peculiarity is good. The mortar can fill every surface part of the hollow bolts, so the bolts get rid of being rusty, finally we get the goal of long term protection and supporting for rocks. |
- Using the jackdrill dig into the same depth of bolt length.
- Install the steel rising shell anchor head on the hollow bolt.
- Put hollow bolt into the ready hole.
- Install stopper mortar plug, base plate and nut on up side of hollow bolt.
- Reversal the bolt, and make anchor head' rising shell grasp well of hole.
- Fulfill the mortar.
| rising shell anchor head body |
The shell |
rising shell anchor head |
| Connection pipe |
Base plate |
Full set |
| Packing and Transportation |
1.What is your paying terms?
Our usual paying terms are 30%TT as deposit and balance paid after seeing copy of bill of loading. For clients cooperated for more than one year, we accept 20% prepay. Beside we do business also under D/P and LC terms.
2.How long is your delivery time?
For the goods we have in stocks, we deliver the goods within 5days. If it is a production order with volume not above 200tons, the delivery time will usually be within 20days after sealing contract. And the delivery time shall be slightly longer for order volume above 200tons.
3.Can you do partial shipment?
We will follow client request to do partial shipment or not. Partial shipment is not a problem for us.
4.What is your Minimum Order Quantity?
For goods in stocks we supply starting with one piece. Shall it is a production order, the MOQ is 3tons. Please be noted price based on MOQ will be slight higher than FCL condition due to higher unit cost.
5. Before cooperation we want a sample for inspecting of quality, is that okay?
We can provide a free sample for you shall sample value not above 30USD, you only need to pay the express charge. For a sample valued more than 30USD, the express charge and just one half of sample value is on the account of you, and we afford the other half.
6. What is the mode of transportation?
Ocean freight is the most important shipping way, and we choose the ship line based on soonest and earliest shipping time, rather than cheaper cost; or we follow clients' instruction if there is one. Also railways will be chosen by us when it is more convenient. For samples and papers, the transportation will be by air.
Audited Supplier 
){kind=link}