规格：42.5 数量：1200吨
备注：Need metal cross-section, 3 different type- A,B,C
需要A、B、C三种不同类型的钢材型材
Steel's name is steel 35.
钢材为35号钢
Chemical composition:
化学构成
of carbon(C) - no more than 0,32-0,35 %,
含碳量不超过0.32%-0.35%
silicon(SI) of 0,17-0,37 %,
含硅量0.17%-0.37%
manganese(MN) of 0,5-0,8 %,
含锰量0.5%-0.8%
chrome( Cr) no more than 0,25 %.
含铬量不超过0.25%
Quantity:
Type A- 500 ton
Type B),C- 350 ton, each type
数量：
A型钢材500吨
B、C型材各350吨
Technical requirements:
技术要求：
- hire is delivered multiple length according to the order, the admission for length of hire + 50 mm.;
-每条长度允许50mm公差
- no more than 20 mm are allowed smyaty the hire ends at length., the height of agnails at порезке hire shouldn't exceed 1,5 mm., косина реза shouldn't exceed 5 mm.;
-两端挤压不超20mm，切口痕的高度不超1.5mm，切口斜度不超5mm。
-curvature of a cross-section on the plane of the wide shelf shouldn't exceed 5 %, on an edge of this shelf – 10 % of length of a peal;
横截面弯度不超5%，长度弯度不超10%
- twisting of a cross-section no more than 3? on meter;
扭度每米不能超过3个扭度单位
- hire is made of brand 35 steel in accordance with GOST 1050. The maintenance of a mass fraction of sulfur – no more than 0,030 %, phosphorus – no more than 0,025 %;
35号钢符合GOST1050，硫磺不超过0.030%，磷不超过0.025%
- hire is delivered in packs in weight to 3 ton.
每捆型材包装不超3吨
型材长度要求
草图 А 6550-6600 mm ,重量：48-49 kg
草图Б 5780-5830 mm , 重量：71-72 kg,
草图 В 5940-5990 mm, 重量：77-78 kg