韩国乱码片免费看,丰满少妇大叫太大太粗,波多野42部无码喷潮在线 ,国产成人精品日本亚洲18

Welcome to Kunshan Hao Run Precision Mold Co.,LTD

Chinese|English|Homepage/Favorites

_Precision stamping parts | Precision stamping die |CNC precision machining |  Mobile shield  | Sheet metal processing

_Precision stamping parts | Precision stamping die |CNC precision machining |  Mobile shield  | Sheet metal processing
Kunshan Hao Run Precision Mold Co.,LTD
Contact: Miss Su
Mobile: 15995651409
Tel: 0512-87882109
Fax: 0512-57037099
E-mail: suesu@hrjmmj.com.cn
Website: www.dunmang.cn
Address: No. 471 Road, Kunshan Development Zone Kunjia

News Center

Position:Homepage|Technical Knowledge

Stamping sheet metal processing technology commonly used material resolved

Author: ComeFrom: Date:2015/5/30 22:11:02 Hits:9880
    Stamping sheet metal processing technology commonly used material resolved as follows:
    Galvanized steel SECC
    SECC substrates for the average cold rolled coil, galvanized in a continuous production line after degreasing, pickling, electroplating and various post-treatment process, it becomes galvanized products. SECC not only has the mechanical properties of cold-rolled steel sheet and approximate general workability, and has excellent corrosion resistance and decorative appearance. Has a great competitive and substituting in the electronic products, home appliances and furniture market. Such as the current widespread use of computer chassis is SECC.
    Hot-dip galvanized steel SGCC
    Hot-dip galvanized steel coil refers to semi-finished products after the hot pickling or cold, after cleaning, annealing temperature of about 460 ° C immersed in molten zinc bath, leaving the steel coated with zinc layer, and then by quenching leveling and chemical treatment from. SGCC material harder than the material SECC, ductility (avoid deep drawing design), zinc layer is thicker, poor welding.
    Common cold rolled sheet SPCC
    SPCC cold rolled steel ingot means continuous rolling machine into the desired thickness of the steel sheet roll or sheet material. SPCC surface without any protection, exposure to easily oxidized in air, oxidation speed, especially in humid environments, appear dark red rust, in the use of the surface to be painted, plated or other protection.
    Stainless steel SUS304
    One of the most widely used stainless steel, because it contains Ni (nickel) so than containing Cr (chromium) steel richer corrosion resistance, heat resistance, have very good mechanical properties, non-hardening heat treatment, there is no flexibility.
Contact: Miss Su  15995651409  Tel: 0512-87882109  Fax: 0512-57037099  E-mail: suesu@hrjmmj.com.cn
Website: www.dunmang.cn  Address: No. 471 Road, Kunshan Development Zone Kunjia
All rights reserved:Kunshan Hao Run Precision Mold Co.,LTD  Technical Support:KSGUOCHENG  Su ICP 15021490 
Link: Qimei electronic  Lenovo  BOE  Apple  ASUS 
97精品伊人久久久大香线蕉| 国产乱人伦在线播放| 亚洲中文字幕无码爆乳app| 精国产品一区二区三区a片| 国产精品无码av天天爽| 人妻丰满熟妇av无码区乱| 伊人久久大香线蕉av不变影院| 国产av无码专区亚洲版综合| 粗大的内捧猛烈进出看视频| 欧美拍拍视频免费大全| 亚洲色欲色欲www在线观看| 国产免费永久精品无码| 国产精品亚洲αv天堂无码| 99精品电影一区二区免费看| 色屁屁www影院免费观看入口| 天天躁夜夜躁狠狠眼泪| 亚洲中文字幕无码久久| 女人爽到高潮免费看视频| 99久久精品费精品国产一区二区 | 麻豆精产国品| 中文无码av一区二区三区| 国内女人喷潮完整视频| 日本护士吞精囗交gif| 中文字幕无码人妻aaa片| 非洲黑人性xxxx精品| 国产av无码专区亚洲精品| 亚洲中文字幕无码av在线| 无套内射在线无码播放| 人妻在厨房被色诱 中文字幕| 免费a级毛片无码免费视频120软件| 国产免费永久精品无码| 国产精品熟妇视频国产偷人 | 人妻久久久一区二区三区| 日韩欧美亚洲中文乱码| 一色桃子中文字幕人妻熟女作品| 亚洲中文字幕无码久久2017 | 全球av集中精品导航福利| 妺妺窝人体色www在线| 亚洲 小说 欧美 激情 另类| 国产午夜成人久久无码一区二区| 久久精品国产亚洲7777|