After receiving the sample product from you, we have conducted experiments with threaded sockets product is rebar Coupler.With 2 products D20, D25, then ok. But with the product category has little to D22 (part I marked in the attachments). With Rebar Coupler D22, the only limit was reached, while limited kN 215.0 standard load is 227kN.We recommend the you please check again with techniques on steel material which side you use infidelity C45 steel or not? We have comments if you can use the S45CR or S40CR type for steel Rebar Coupler, so will ensure achieving the criteria ofYou can refer to for more information about our company at the website: www.shicom.vn and you will also know that we are also manufacturers, business. However this time we expand business market sector should the domestic production is not enough to be immediately responsive so we want to be associated with you in the long run rather than just through the import of 1st shipment only.Hope your side will take the earliest response information to us so that we can proceed to the next step in the durable cooperation
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