Ping Ya Industry and Trade to introduce you to the appearance of steel doors of requirements: (1) welding. Welding should firmly upscale interior door factory direct, spot distribution. Not false welding and burn phenomenon. The outer surface of the plug weld site should be polished smooth. (2) spray coating requirements. Fire doors should be sprayed surface rust primer Which upscale interior doors, paint should be uniform, smooth, not a pile of paint, pitting, bubbles, missed coating and flow phenomena. (3) frames, doors surface without obvious bump, scratches and other defects. Ping Ya Industry and Trade of steel doors and accessories material requirements: (3) is mounted on the high-grade steel fire door interior door locks procurement, hinges, bolts and other hardware accessories melting temperature of not less than 950 ℃. (4) mounted on a fire door hinge upscale interior doors, not use two-way spring, single door closers should be located. There must be room (5) double doors covered slit plate, and the installation of door closers and order, etc. (except fire doors normally closed). (6) should be established door seal groove. Tank should be fitted into the seal groove by non-combustible material. Upscale interior doors prices | Huzhou upscale interior doors | Ping Ya Industry and Trade Co., Ltd. to provide corporate integrity level by Yongkang Ya Industry and Trade. Yongkang Ya Ping Ltd. (www.ykpygm.com/) strong, credible, Zhejiang Jinhua doors industry has accumulated a large number of loyal customers. The company better work attitude and constantly improve the level of innovative ideas will lead into the elegant splendor of Industry and Trade and you work for a better future!