Hengxin high voltage focuses on the production of butt welded pipe parts, and its products serve the power, petroleum, refining, coal chemical and other industries

we have established an experienced technical team to escort the products:

1. Type test: we have conducted type test coverage for each product produced

2. Strength check: check the strength item by item according to DL / T 5054, GB / T 150, ASME b31.1, B31.3 and B31.8

3. Process control: strictly control the calcination temperature and carry out heat treatment according to the specifications

4. Nondestructive testing: 90% of all pipe fittings shall be subject to magnetic particle or penetration and ultrasonic testing

5. Physical and chemical test: chemical composition, mechanical properties, hardness and gold shall be tested according to the furnace batch number, and 90% of the surface hardness shall be tested

6. Dimension and appearance inspection: 90% of all pipe fittings shall be subject to dimension and appearance inspection

7. PMI detection: 90% of all pipe fittings shall be subject to spectral detection

8. Issue certificate: provide customers with a full set of test reports and certificates

design standard: DL / T 5054, GB / T 150, ASME b31.1, ASME b31.1, B31.3, B31.8

material standard: ASME SA234 / 403 / 420 / 860, en 10216-2, GB / T 5310

manufacturing standard: GB / T 12459, GB / T 13401, ASME b16.9, en 10253, MSS sp-75