Product Description
Features of cold rolling
Cold rolling refers to the process of reprocessing hot-rolled
materials at room temperature, which is mainly characterized by the
following points:
1. High strength: Due to processing at low temperatures, the
cold-rolled material has high tensile strength and yield strength.
2. High toughness: The metal grains deformed by external extrusion
will become smaller and more evenly distributed, so the cold-rolled
material has good toughness.
3. High hardness: During the cold rolling process, indentation is
formed on the surface of the material, thereby improving the
hardness of the material.
4. Good formability: compared with hot-rolled materials,
cold-rolled materials are easier to carry out subsequent processing
and forming.
5. Good surface quality: Because the surface of the cold-rolled
material has been rolled for many times, the surface is smooth and
smooth, no defects such as oxide skin.
Shandong Zhengde Metal Manufacturing Co., Ltd. products include stainless steel, seamless pipe, color coated
plate, galvanized sheet, aluminized sheet, aluminum sheet, copper
sheet and other profiles, building materials, pipe series. Products
are widely used in chemical, pharmaceutical, electric power,
railway, automotive, paper and construction engineering. The
company has long-term close trade relations with Shandong Iron and
Steel, Tangshan Iron and Steel, Handan Iron and Steel, Jinxi Iron
and Steel and other well-known domestic steel companies.Welcome you
to join us !Technical Standards for cold rolled steel coil |
grade | Zhengde enterprise standard | Comparable to foreign standards | illustrate |
Standard | Grade | Standard | Grade |
general use | Q/BQB403 Q/BQB402 | St12 SPCC | DIN1623JISG3141 | St12 SPCC | For general forming processing such as refrigerators and other home
appliance shells, oil barrels, and steel furniture. |
stamping grade | Q/BQB403 Q/BQB402 | St13 SPCD | DIN1623JISG3141 | St13 SPCD | Steel for stamping and forming processes such as automobiles, home
appliances, and construction. |
Deep drawing | Q/BQB403 Q/BQB402 | St14, (F, HF, ZF)SPCE (F, HF, ZF) | DIN1623JISG3141 | St13 SPCE | Automobile headlights, fuel tanks, car doors, windows and other
steels for deep drawing and forming. |
Steel for extra deep drawing | Q/BQB403 | St15 St14T | | | Car headlights, complex underbody panels, oil pans. |
hard steel | Q/BQB402 | SPCC4D SPCC8D SPCC1D | JISG3141 | 1/4 hard1/8hard | Steel for bicycle rims and steel for stationery. |
structural steel | Q/BQB410 BZJ410 | St37-2G St44-3G St52-3G | DIN1623 | St37-2G St44-3G St52-3G | Buildings, car bodies, brackets. |
Atmospheric resistant steel | BZJ441 | B440NQ B450NQ B460NQ B500NQ | | | Automobile, train car outer panels, container panels, doors and
windows, cold-formed steel and other components. |
Steel for TV | Q/BQB470 | SPCCK, St12CK SPCCCE SECCCD St50CB BCK-1 | | | Color picture tube shadow mask frame, color picture tube earrings,
color picture tube explosion-proof plate with galvanized steel
strip, color picture tube explosion-proof steel, color picture tube
frame. |
steel for car wheels | BZJ412 | B320LW B360LW | | | Steel for automotive wheel rims. |
Our Advantages
High precision
Compared to hot-rolled steel plates, cold-rolled steel coils have
more precise thickness, smooth and beautiful surfaces, and also
possess various superior mechanical properties, especially in terms
of processing performance. Due to the brittleness and hardness of
the cold rolled coil, it is not suitable for processing. Therefore,
in general, cold rolled steel plates require annealing, pickling,
and surface leveling before being handed over to the customer.
Extensive use
Cold rolled steel coil, with a smooth surface and excellent
processing, is used in household appliances such as automobiles,
refrigerators, washing machines, as well as industrial equipment
and various building materials. With the development of the
economy, cold rolled steel plates have become a necessary material
in modern society. Among them, cold rolled hard coils can be used
as raw materials for hot dip galvanizing plants, as hot dip
galvanizing units are equipped with annealing lines. The weight of
the rolled hard coil is generally between 8-23 tons.
Strict craftsmanship
Cold rolled steel coils generally use hot-rolled strip steel with a
thickness of 1.5-6 mm as the cold rolled billet. The main processes
include pickling, cold rolling, degreasing, annealing, leveling,
and shearing (cross cutting, longitudinal cutting). If producing
coated plates, there are also plating or coating processes such as
electroplating tin, hot tin coating, and hot zinc coating. The
production process of cold rolled billets is as follows: hot rolled
sheet coils (raw materials) - acid washing - cold rolling -
degreasing - annealing - leveling - shearing - finished product
delivery.
Provide deep processing
The company's slitting machine, slitting line, cuts cold rolled
steel coils into strips of various widths as needed, and then folds
the strips into small coils for use in the next process. It is a
necessary equipment for precision cutting of transformers, motor
industries, and other metal strips. It is mainly used for strip
cutting of materials such as tinplate, galvanized iron, silicon
steel sheet, cold rolled strip, stainless steel strip, aluminum
strip, steel strip, and other coils.
Quality first: production and inspection in strict accordance with
production standards;Provide on-site video or SGS inspection before loading,in order to ensure the quality and quantity of products and make
customers rest assured.This is also the tradition and
characteristic of our factory;
Price advantage: our price is absolutely competitive, because we produce and sell
ourselves, saving a lot of unnecessary costs. We also have the
power to do that;
Transaction security:avariety of payment options are available;
After-sales guarantee: the customer's problem is our problem,our goal is win-win, customers receive satisfactory products and we
get an excellent returned customers;After receiving the product satisfaction, submit the praise, the next cooperation to give 1-3% additional discount
extra;Long-term cooperation: quality assurance, price advantage, sincere
service can last for a long time.Detailed Photos
Packaging & Shipping
Company Profile
Shandong Zhengde Metal Manufacturing Co., Ltd. is a production and sales company integrating hot-rolled steel
coils, cold-rolled steel coils, galvanized steel coils,
color-coated steel coils, section steel, steel pipes, steel wires,
metal mesh, stainless steel, aluminum, copper and other metal
products integrated large enterprises. Five production and sales
bases have been formed in Binzhou, Liaocheng, Wuxi, Tianjin, Jinan
and Tai'an, with more than 100 production lines, 4 nationally
recognized laboratories, 2 technical engineering centers, and 5
enterprise technology centers. Products are exported to more than
50 countries and regions such as North America, South America,
Europe, Africa, Oceania, Middle East, and Southeast Asia.
Certifications
FAQ
Q1:Can you send samples?
A:Of course, we can provide customers with free samples and express
shipping service to all over of the world.
Q2:What product information do I need to provide?
A:Please kindly provide the grade,length, width, thickness, surface
treatment requirement should you have and quantities you need to
purchase.
Q3:It's my first time to import steel products, can you help me
with it?
A:Sure,we have agent to arrange the shipment, we will do it
together with you.
Q4:What ports of shipment are there?
A:Under normal circumstances, we ship from Shanghai, Tianjin,
Qingdao, Ningbo ports, you can specify other ports according to
your needs.
Q5:What about product prices information?
A:Prices various according to periodic price changes of raw
materials.
Q6:What is your terms of payment ?
A:Payment<=1000USD, 100% in advance. Payment>=1000USD, 30%
T/T in advance ,balance before shipment or based on BL copy or LC
at sight.
Q7:Do you provide custom made Products service?
A: Yes,if you have your own design , we can produce according to
your specification and drawing.
Q8:What are the certifications for your products?
A:We have ISO 9001, MTC, third parties' inspections are all
available such SGS, BV ect.
Q9:How long does your delivery time take?
A:In general, our delivery time is within 7-15 days, and may be
longer if the quantity is extremely large or special circumstances
occur.
Q10: How many countries you already exported to?
A:We have exported to America, Canada, Brazil, Chile, Colombia,
Russia, Ukraine, Thailand, Myanmar, Vietnam, India, Kenya,
Ghana,somalia and other African countries.Our export experience is
rich, we familiar with different market demands, can help customers
avoid a lot of trouble.
Q11:Can I go to your factory to visit?
A:Of course, we welcome customers from all over the world to visit
our factory.
Q12:Does the product have quality inspection before loading?
A:Of course, all our products are strictly tested for quality
before packaging, and unqualified products will be destroyed and
customers will be well evaluated.