STK400 Carbon Steel Square and Rectangular Tubes Thin- and Thick-Walled Steel Tubes for Mechanical Engineering Applications

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Section : Construction & Building Materials
Category : Other Steel Pipes
SKU : 1601700494937

STK400 Carbon Steel Square and Rectangular Tubes

The STK400 Carbon Steel Square and Rectangular Tubes are designed for various mechanical engineering applications. These tubes come in both thin and thick-walled options, providing flexibility and durability for your projects. Manufactured by Shandong Baotesiman Metal Materials Co., Ltd., these tubes meet high standards of quality and performance.

Specifications

Attribute	Details
Grade	STK400
Length Options	12 m, 6 m, 6.4 m
Surface Treatment	Hot Dip Galvanizing, Electrogalvanizing, Oil Coating, Acid Pickling
Applications	Boiler Pipe, Drill Pipe, Hydraulic Pipe, Oil Pipe, Gas Pipe, Chemical Fertilizer Pipe
Production Standards	GB/T, ASTM, EN, JIS
Customization	Available based on provided drawings

Key Features

Available in hot-rolled and cold-drawn seamless options.
Custom shapes include square, rectangular, and complex cross-sections.
Multiple welding processes: arc, resistance, gas, and furnace welding.
Surface treatments enhance durability and corrosion resistance.
Manufactured in compliance with international standards.

Applications

Used in mechanical engineering projects.
Ideal for construction and structural applications.
Perfect for oil and gas industry requirements.
Applicable in the manufacturing of machinery and equipment.
Utilized in various transportation and power generation sectors.

Choose the STK400 Carbon Steel Square and Rectangular Tubes for high-quality, reliable solutions tailored to your engineering needs.

Shipping Timeframes: All orders are processed within 2-5 business days (excluding weekends and holidays). After your order has been processed, the estimated delivery time is before 09 May, 2026, depending on customs, Please note that due to high demand, some items may experience longer shipping times, which will be communicated at order confirmation email.
Order Processing Time: Please allow 2-5 business days for us to process your order before it is shipped . Orders placed after 16:00 on Fridays, or during weekends and public holidays, will begin processing on the next business day. Processing times may be extended during peak seasons or sales events.
Manufacturing Time: Some products needs manufacturing time, the manufacturing process will take approximately 10-30 business days depending on the product. This timeframe may vary depending on the complexity of the product and current demand. but this will be communicated with you during order confirmation.
Returns and Exchanges: We offer a 30-day return policy for most items. If you are not completely satisfied with your purchase, you may return it within 30 days of receipt for a refund or exchange. Items must be unused, in their original packaging, and accompanied by proof of purchase. Return shipping costs are the responsibility of the customer, unless the item was damaged or defective upon arrival.

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