A gear H62 which made in yellow brass with the same mode number m=0.34, 2mm thick and had a center hole, when the gap get C=0.5%t , and punched with compound punching die, and the dimension accuracy reached IT7, the part have a flat surface ,the verticality of tangent plane reached 89.5°, its roughness Ra magnitude are 12.5μm, height of burr are 0.10mm; and the punching part are punched with progressive die, the gap C=7%t , initial accuracy are IT11, and have an more rough surface, even can see the gap with eyes.

例如料厚t=1.5mm的H62黃銅沖裁件免费一级a片精品久久网，選用C≤40%t單邊Ⅰ類小間隙沖裁比選用C≤8%tⅢ類大間隙沖裁，沖件固定誤差將加大40%～60%在线精品视频播放，精度至少降一級九九高清色综合免费视频在线观看。此外，采有無搭邊排樣，沖件的誤差要遠(yuǎn)大于有搭邊排樣沖件超碰在线播放平台。無搭邊排樣沖件亚洲污污久久久久av。無搭邊排樣沖件的精度低于IT12級，而多數(shù)有搭邊排樣的沖件精度在IT11～I(xiàn)T9級之間色呦呦在线国产亚洲，料厚t＞4mm的沖件国产午夜在线精品三级三，尺寸精度會更低一些。

The Super 400 is constructed from rose brass, not the yellow brass used on most saxophones.

Super 400 是用玫瑰銅制成华人永久免费在线视频，并不像其他多數(shù)薩克斯用黃銅制成国产在线无码一区二区三区视频。

Company main products are: Air Conditioning and Refrigeration brass, brass heat exchangers and a variety of models with ordinary yellow brass.

公司主導(dǎo)產(chǎn)品為：空調(diào)與制冷用銅管，熱交換器用銅管和各種型號的普通黃銅管成年片色大黄全免费网站久久。

Foshan Shunde Dong Lin Non-Ferrous Metals Co., Ltd. was established in 1988, has over 20 years is a professional production of yellow brass, rods, profile of large-scale well-known enterprises in South China reputation.

佛山市順德區(qū)東霖有色金屬有限公司成立于一九八八年黄色青草视频e，是一家有著20多年專業(yè)生產(chǎn)黃銅管、棒欧美日韩精品福利在线观看、異型材的大規(guī)模知名企業(yè)天天操夜夜操一区,二区,三区,，在華南地區(qū)享有盛譽(yù)。

The brightness of yellow brass flakes is upgraded by control of suboxidization reaction of peroxide and yellow brass flakes .

利用氧化的方法一级视频在线观看免费播放，控制過氧化氫與銅鋅合金粉發(fā)生氧化反應(yīng)人人干,人人草，達(dá)到提高銅鋅合金粉亮度的目的。

It had a perfectly round door like a porthole , painted green, with a shiny yellow brass knob in the exact middle.

這座洞穴有個(gè)像是舷窗般渾圓https国产黄视免费、漆成綠色的大門国产2021精品，在正中央有個(gè)黃色的閃亮門把。

Today, however, this problem has returned with the increased use of high-zinc alloys (commonly referred to as 'Yellow Brass') in forged and cast valves typically produced outside the United States.

但是狂野欧美男人的天堂网站，由于當(dāng)今在美國國外一般生產(chǎn)的鍛造和鑄造閥門產(chǎn)品上免费看A片直接打开，高鋅合金的使用增加，現(xiàn)在這個(gè)問題又開始回潮最新狼友网址。

Founded in 1990, specializing in the production of bronze pieces, bronze valves, brass valves, yellow brass pieces, Shuizui, stainless steel pipe fittings and accessories, such as plumbing.

公司創(chuàng)建于1990年尤物精品国产综合久久9420，專業(yè)生產(chǎn)青銅管件、青銅閥門国产尤物视频在线、黃銅閥門九色popny200、黃銅管件、水嘴新久久黄色视频、不銹鋼管件及水暖配件等国产在线精选免费。

The main production of copper alloy tubes, copper water pipe insulation compound, copper trachea and connecting pieces, purple yellow brass, refrigeration accessories and all kinds of copper fittings and so on.

主要生產(chǎn)各種銅合金管材，復(fù)合保溫銅水管久久综合一色综合久久小蛇、銅氣管及連接件操操干操干、紫黃銅管、制冷配件及各類銅配件等18禁美女裸体黄色网站。

T2, T3 brass, H90, H70, H68, H65, H62, HPb59-1 yellow brass will be the spirit of "management norms, Seiko produced; customer satisfaction, hung Seoul in pursuit of" the quality policy, and our expectations at home and abroad new and old customers come to negotiate business and technical cooperation.

T2手机看片1024乱伦、T3銅管日韩色图欧美色图，H90、H70多人操逼视频、H68黄色录像一区二区三区中文字波、H65、H62亚洲一区免费观看、HPb59-1黃銅管公司將本著&管理規(guī)范黄片在线免费没播放，精工制作；顧客滿意国产农村乱免费视频，鴻爾追求&的質(zhì)量方針日韩无码黄色性交，竭誠期盼國內(nèi)外新老客戶前來洽談業(yè)務(wù)和技術(shù)合作。