Job preparation before welding|ওয়েল্ডিং করার আগে জব প্রস্তুতি |

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এত সুন্দর ভাবে বোঝানোর জন্য ধন্যবাদ স্যার.......!

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স্যার বিড টা টেনে দেখালে ভালো হত 💯💯

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[@beatfire1713]

Nsda level 1 e gas welding ki 1g ashbe?

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yes..gas welding 1g ashbe.

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আপনাদের সেন্টার এর নাম কি?

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