火焰直接加热 meaning in English

direct-fire heating

It was approved by provincial technical authentication in 1999 that the high pressure hydrogenation stainless - steel sharp bend elbow made by our company has filled up the blank of the technology of high pressure close to hydrogen , direct heating the sharp bend elbow with flame in china , and with this product , our company was awarded the second and third prize of science technology progress in local and city , whats more , this product has also been recommended as the high - tech product by china council for the promotion of international trade and french supervising estimating commotion for scientific quality
公司自主研发的“ 180不锈钢无缝弯头” ，被评为国家级新产品“高压加氢不锈钢急弯弯管” 99年通过省部级技术鉴定，填补了“高压临氢火焰直接加热急弯弯管”工艺技术的国内空白，荣获地市科技进步二三等奖，被中国国际贸易促进委员会及法国科技质量监督评价委员会向欧盟市场推荐为高科技产品