Precision Steel Tube are produced by Cold Drawn and Cold Rolling, with very good OD and ID tolerance and smoothness ,
with very good Concentricity, Good Ovality, Good Roundess, Less Deviation, suitable for machinery and CNC machining part, for auto parts.
Cold Drawn Seamless tubing (also known as CDS steel tube. Cold Drawn Seamless tubes offer tight tolerances compared to Hot Finished Seamless tube, and offers stronger physical properties compared to other mechanical tubing.
CDW Steel Tubes is made by drawing the ERW tubes from the tube mills through a plug and die combination, mounted on the draw bench. The end tagged and annealed tubes are drawn through a closely machined die that controls the outside diameter of the tubes. At the same time the tube passes over a plug that controls the inside diameter. Further, the manufactured tubes are processed by the downstream facilities for different industry applications.
Technical Standard according to:
ASTM A513, ASTM A519,
DIN2391, EN10305-1, EN10305-2, EN10305-4,
SAE J 524, SAE J525 etc.
Delivery Condition:
Cold Finished ( BK, C/W, without heat treatment)
Normalized (+N)
Stress Relieved Annealed (+SRA)
Steel Grade:
SAE 1010, SAE 1020, SAE 1026, SAE 4130, SAE 4140.
ST35.8, ST37.0, ST52, E235, E355, 42CrMo4,etc
Sizes:
OD: 4.0 to 350mm
WT: 0.5 to 50mm
Length: Cutting Length available, max 12000mm according to Customer PO.
Precision Steel Tube,Welded Precision Steel Tubes,Seamless Precision Steel Tube,Din2391 Seamless Precision Steel Tube TORICH INTERNATIONAL LIMITED , https://www.steeltubepipechina.com
Why did Delfast enter the B2B segment?
Delfast, a well-known electric bike manufacturer, started as a delivery service company. This unique background gave the brand deep insight into the needs of couriers and delivery professionals. Since 2014, Delfast has been focused on creating the most efficient mode of transportation for delivery services, starting from scratch. Their goal was to build the perfect e-bike for their own delivery team, and they succeeded.
Today, Delfast’s delivery company in Kyiv, Ukraine, is still active, serving individual clients, online stores, and restaurants. While the brand offers both urban and off-road models, its core focus remains on B2B solutions. The company aims to replace traditional delivery tools like scooters, vans, and regular bicycles with electric bikes — and there are strong reasons behind this shift.
Electric bikes are cost-effective, making them ideal for businesses and independent couriers. There’s no fuel cost, no parking fees, and minimal maintenance required. Plus, no driver's license is needed to operate an e-bike. The main investment is the initial purchase and occasional maintenance, making it a smart financial choice.
Compared to traditional bicycles, e-bikes require very little physical effort, allowing people of all ages and fitness levels to perform their delivery tasks efficiently. With a powerful battery, riders can make more deliveries per day, increasing income potential. For many, an e-bike is not just a vehicle — it’s a long-term investment that pays off.
Moreover, e-bikes are efficient, fast, and environmentally friendly. Using Delfast e-bikes helps reduce carbon emissions, making them a sustainable choice for businesses looking to minimize their environmental impact. In a world where eco-conscious choices matter more than ever, Delfast sees e-bikes as a key solution for reducing human impact on the planet.
Especially during the pandemic, we’ve witnessed how much nature has suffered from pollution and overuse. Electric vehicles, like Delfast e-bikes, leave zero emissions, making them a clean and responsible choice. At the same time, we’ve come to appreciate the hard work of delivery workers who bring essential goods to people stuck at home.
To support these professionals, Delfast has developed three specialized e-bike models exclusively for B2B customers: Partner, Partner 2.0, and Trike. One of these models is still in the prototype stage, but all are designed with the specific needs of business users in mind. These models are built to enhance productivity, improve efficiency, and provide a reliable, eco-friendly alternative to traditional delivery methods.
By entering the B2B market, Delfast is not just selling e-bikes — it's offering a smarter, greener, and more sustainable way to deliver goods. Whether you're a small business or a large delivery company, Delfast provides the tools to succeed in today’s fast-paced and environmentally aware world.