Tuesday, 02 January 2024 12:17 GMT

Kazakhstan Refinery Project GOST 21646 LO-70-1 Brass Tubes In Full Production


(MENAFN- GetNews) Order Date: August 17, 2025

Order Details:

SN

Commodity Name

Standard & Material Code

Dimensions (mm)

Quantity

Out Diameter

Thickness

Length

Meters

PCS

KGS

1

BraSs Tube

GOST 21646 LO-70-1

19

1

4550

40136

8821

19361

TOTAL

40136

8821

19361

Technical Highlights

The customer required the product to be manufactured strictly in accordance with Russian Standard GOST 21646 LO-70-1, covering chemical composition, heat treatment, and mechanical properties. The client specifically noted that a previous batch of tubes purchased from another Chinese supplier failed acceptance in Kazakhstan due to inconsistent chemical composition.

To ensure 100% compliance and performance reliability, EZ STEEL arranged a dedicated smelting batch exclusively for this order. The alloy's precise composition is carefully controlled, as detailed below:

CHEMICAL COMPOSITION (%)

Reference standard

Material

Cu

Sn

Pb

Fe

As

Zn

BI

P

S

NI

ASTM B111

C44300

70.0-73.0

0.9-1.2

0.070

0.060

0.02-0.06

Rem.

/

/

/

/

GOST 21646

LO-70-1

69-71

1-1.5

≦0.07

≦0.07

/

27.2-30

≦0.002

≦0.01

GB/T 5231

HSn70-1

69-71

0.8-1.3

0.050

0.100

0.03-0.06

Rem.

/

/

/

/

Commercial Progress

After multiple rounds of discussion, the client decided to visit our copper tube casting, extrusion, and drawing workshops in early August for a technical inspection. Following the visit, they confirmed the quality and production capability of EZ Metals and placed an initial 19-ton order as the first batch.

Given the client's tight delivery schedule of 25 days, our production and scheduling teams coordinated closely to ensure timely delivery. As of September 22, 2025, part of the finished tubes have already been packed and prepared for shipment.

Commitment to Quality and Delivery

At EZ STEEL, we take pride in our promise: delivering high-quality products on schedule. Each batch of GOST 21646 brass tubes is produced under strict process control, ensuring consistent alloy performance and durability under refinery operating conditions.

#GOST 21646 Brass Tube #LO-70-1 Brass Tube #CuZnSn Alloy Tube #CuZn Copper Alloy #Copper Tube Supplier #C44300 Tube #Brass Tube Manufacturer China #Kazakhstan Refinery Project

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