Complaint
| standard | GB/T3639-2000 | DIN2391 | EN10305 | ASTM A519 |
| material | C20 CK45 Q355B Q355D | E355/ST52 SAE1026 | 4130 4140 | STKM 13C |
| Heat treatment | BK+S | |||
| size | I.D:30mm-400mm | O.D:40mm-480mm | ||
| length | Fixed length | Random length or as requests of customers | ||
| Straightness | 1/1000 | |||
| Technology | Honed SRB(SKIVED AND ROLLER BURNISHED) | |||
| Scope | Honed tube for hydraulic cylinder,swivel crane,injection machine and construction machine application | |||
Q1: Are you Manufacture or Trade Company?
A1: We are manufacture,we have 10 years experience for supply Metal material and products in domestic.
Q2: How can we guarantee quality?
A2: Always a pre-production sample before mass production;Always final Inspection before shipment;
Q3: What is your terms of payment ?
A3: 1.T/T: 30% deposit in advance, the balance 70% paid before shipment
2.30% down payment, the balance 70% paid against L/C at sight
3.Upon negotiation
Q4: Can you provide Certificates for materials ?
A4:Yes,we can supply MTC-Material Test Certificate.
Q5: Can you provide sample?
A5: Yes, we can provide you sample, but you need to pay for the sample and freight firstly. We will return the sample fee after you make an order.
