Ụlọ ọrụ na-ere ahịa nke ọma China Factroy Sell Stone Bridge Brand Welding Electrodes J421 J422 Welding Stick

Nkọwa dị mkpirikpi:

Eji maka ịgbado ọkụ dị mkpa obere carbon ígwè arụ ọrụ na ala alloy ígwè owuwu na ala ike akara ule, dị ka Q235, 09MnV, 09Mn2, na wdg


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