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Precision CNC Machining Seamless Rectangular Tubes / Round Hole Steel Tubes

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Zinc Zamak Forging Parts

Ms. tian

Lillian@sande3.cn

86--13573283285

amatomato

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Precision CNC Machining Seamless Rectangular Tubes / Round Hole Steel Tubes

MOQ:	1000
Price:	$0.5-2
Standard Packaging:	Wooden case
Delivery Period:	30 days
Payment Method:	D/P,T/T,Western Union
Supply Capacity:	10000PCS/month

Details Information

Product Description

Detail Information

Place of Origin

Qingdao, China

Brand Name

Qingdao Sande Tech Co.,Ltd

Certification

ISO, DIN, AISI, ASTM, BS, JIS, etc.

Model Number

OEM

Lead Time:

30-40days

Plating:

Zinc

Durability:

Long-lasting

Product_Name:

Machining Parts

Strength:

High Strength

Surface:

Anodized

Highlight:

Precision Machining Seamless Rectangular Tubes

CNC Machining Seamless Rectangular Tubes

CNC Round Hole Steel Tubes

Product Description

CNC precision machining of seamless square tubes/round hole steel tubes

Product Description

We specialize in high-precision CNC machining of seamless thick-walled steel tubes with outer square and inner round profiles, designed for structural, mechanical, and industrial applications. Our advanced machining capabilities ensure tight tolerances, superior surface finishes, and complex geometries for custom tube components.

Key Features & Benefits

✔ Premium Material Selection

Carbon Steel (Q235, 20#, 45#)
Alloy Steel (4140, 4340)
Stainless Steel (304, 316)
Aluminum & Other Metals (Upon Request)

✔ Precision CNC Machining Capabilities

Tolerances: ±0.05mm (Standard) | ±0.02mm (High Precision)
Wall Thickness: 3mm–50mm (Customizable)
Outer Square Sizes: 20mm×20mm – 300mm×300mm
Inner Round Bore: Ø10mm–Ø250mm
Surface Finish: Ra 0.8–3.2μm (Grinding/Polishing Available)

✔ Machining Services

Drilling & Boring – Precision hole machining for fittings and assemblies
Milling & Grooving – Custom slots, keyways, and threads
Cutting & Deburring – Smooth edges for safety and functionality
End-Facing & Chamfering – Ready-to-install tube ends

✔ Customization & Rapid Prototyping

Tailored Dimensions – Adjustable length, wall thickness, and bore size
Secondary Processing – Heat treatment, galvanizing, powder coating
Fast Turnaround – Prototypes in 5–7 days | Production in 10–20 days

✔ Quality Assurance

100% Dimensional Inspection (CMM, Laser Measurement)
Material Certification (MTC, SGS, EN 10204-3.1)
Non-Destructive Testing (UT, Eddy Current)

Product parameters :

1. Basic Parameters

Parameter	Specification
Material	Carbon Steel (Q235, 20#, 45#), Alloy Steel (4140, 4340), Stainless Steel (304, 316), Aluminum
Outer Shape	Square, Rectangle (Custom Profiles Available)
Inner Shape	Precision Round Hole
Outer Size Range	20mm × 20mm – 300mm × 300mm
Inner Diameter	Ø10mm – Ø250mm
Wall Thickness	3mm – 50mm (Adjustable)
Length	50mm – 6000mm (Custom Lengths Supported)

2. Machining Capabilities

Process	Tolerance	Surface Finish (Ra)
CNC Drilling/Boring	±0.05mm	1.6–3.2μm
CNC Milling (Slots/Keyways)	±0.03mm	0.8–1.6μm
Threading (Metric/UNC)	±0.02mm	1.6μm
Cutting & Deburring	±0.1mm	3.2μm (Smooth Edge)
End-Facing/Chamfering	±0.05mm	1.6μm

3. Performance & Testing

Property	Standard	Testing Method
Straightness Tolerance	≤0.1mm/m	Laser Measurement
Roundness Tolerance	≤0.05mm	CMM Inspection
Hardness (HRC)	20–55	Rockwell Test
Pressure Resistance	10–50MPa	Hydrostatic Test
Salt Spray Resistance	500–1000h	ASTM B117

4. Customization & Logistics

Option	Details
Coatings	Galvanized, Powder Coated, Anodized (Aluminum)
Marking	Laser Engraving, Dot Peen
Certifications	ISO 9001, EN 10204-3.1, RoHS
Prototype Lead Time	5–7 Days
Mass Production	10–20 Days (MOQ: 100pcs)
Packaging	PVC Wrapping + Wooden Crates (Export Standard)

Applications

Construction & Architecture – Structural frames, railings, support columns
Machinery & Automation – Hydraulic cylinders, linear guides, robotic arms
Energy & Oil/Gas – Pipeline systems, pressure vessels
Transportation – Chassis components, roll cages

Why Choose Us?

✅ Advanced CNC Equipment – Multi-axis machining centers & lathes
✅ Engineer Support – DFM optimization & CAD/CAM assistance
✅ Competitive Pricing – Cost-effective for both prototypes & bulk orders
✅ ISO 9001 Certified – Reliable quality control

Tags:

Products

MOQ:	1000
Price:	$0.5-2
Standard Packaging:	Wooden case
Delivery Period:	30 days
Payment Method:	D/P,T/T,Western Union
Supply Capacity:	10000PCS/month

Detail Information

Product Description

Detail Information

Place of Origin

Qingdao, China

Brand Name

Qingdao Sande Tech Co.,Ltd

Certification

ISO, DIN, AISI, ASTM, BS, JIS, etc.

Model Number

OEM

Lead Time:

30-40days

Plating:

Zinc

Durability:

Long-lasting

Product_Name:

Machining Parts

Strength:

High Strength

Surface:

Anodized

Minimum Order Quantity:

1000

Price:

$0.5-2

Packaging Details:

Wooden case

Delivery Time:

30 days

Payment Terms:

D/P,T/T,Western Union

Supply Ability:

10000PCS/month

Highlight

Precision Machining Seamless Rectangular Tubes

CNC Machining Seamless Rectangular Tubes

CNC Round Hole Steel Tubes

Product Description

CNC precision machining of seamless square tubes/round hole steel tubes

Product Description

Key Features & Benefits

✔ Premium Material Selection

Carbon Steel (Q235, 20#, 45#)
Alloy Steel (4140, 4340)
Stainless Steel (304, 316)
Aluminum & Other Metals (Upon Request)

✔ Precision CNC Machining Capabilities

Tolerances: ±0.05mm (Standard) | ±0.02mm (High Precision)
Wall Thickness: 3mm–50mm (Customizable)
Outer Square Sizes: 20mm×20mm – 300mm×300mm
Inner Round Bore: Ø10mm–Ø250mm
Surface Finish: Ra 0.8–3.2μm (Grinding/Polishing Available)

✔ Machining Services

Drilling & Boring – Precision hole machining for fittings and assemblies
Milling & Grooving – Custom slots, keyways, and threads
Cutting & Deburring – Smooth edges for safety and functionality
End-Facing & Chamfering – Ready-to-install tube ends

✔ Customization & Rapid Prototyping

Tailored Dimensions – Adjustable length, wall thickness, and bore size
Secondary Processing – Heat treatment, galvanizing, powder coating
Fast Turnaround – Prototypes in 5–7 days | Production in 10–20 days

✔ Quality Assurance

100% Dimensional Inspection (CMM, Laser Measurement)
Material Certification (MTC, SGS, EN 10204-3.1)
Non-Destructive Testing (UT, Eddy Current)

Product parameters :

1. Basic Parameters

Parameter	Specification
Material	Carbon Steel (Q235, 20#, 45#), Alloy Steel (4140, 4340), Stainless Steel (304, 316), Aluminum
Outer Shape	Square, Rectangle (Custom Profiles Available)
Inner Shape	Precision Round Hole
Outer Size Range	20mm × 20mm – 300mm × 300mm
Inner Diameter	Ø10mm – Ø250mm
Wall Thickness	3mm – 50mm (Adjustable)
Length	50mm – 6000mm (Custom Lengths Supported)

2. Machining Capabilities

Process	Tolerance	Surface Finish (Ra)
CNC Drilling/Boring	±0.05mm	1.6–3.2μm
CNC Milling (Slots/Keyways)	±0.03mm	0.8–1.6μm
Threading (Metric/UNC)	±0.02mm	1.6μm
Cutting & Deburring	±0.1mm	3.2μm (Smooth Edge)
End-Facing/Chamfering	±0.05mm	1.6μm

3. Performance & Testing

Property	Standard	Testing Method
Straightness Tolerance	≤0.1mm/m	Laser Measurement
Roundness Tolerance	≤0.05mm	CMM Inspection
Hardness (HRC)	20–55	Rockwell Test
Pressure Resistance	10–50MPa	Hydrostatic Test
Salt Spray Resistance	500–1000h	ASTM B117

4. Customization & Logistics

Option	Details
Coatings	Galvanized, Powder Coated, Anodized (Aluminum)
Marking	Laser Engraving, Dot Peen
Certifications	ISO 9001, EN 10204-3.1, RoHS
Prototype Lead Time	5–7 Days
Mass Production	10–20 Days (MOQ: 100pcs)
Packaging	PVC Wrapping + Wooden Crates (Export Standard)

Applications

Construction & Architecture – Structural frames, railings, support columns
Machinery & Automation – Hydraulic cylinders, linear guides, robotic arms
Energy & Oil/Gas – Pipeline systems, pressure vessels
Transportation – Chassis components, roll cages

Why Choose Us?

Tags:

Hot Forging Parts

Steel Forging Parts

Aluminum Forging Parts

Drop Forged Chain

Conveyor Chain

Machining Parts

Copper Forging Parts

Zinc Zamak Forging Parts

Precision CNC Machining Seamless Rectangular Tubes / Round Hole Steel Tubes

Precision Machining Seamless Rectangular Tubes

CNC Machining Seamless Rectangular Tubes

CNC Round Hole Steel Tubes

Key Features & Benefits

CNC Machining Parts,

CNC Machining Services,

Hot Forging Parts

Steel Forging Parts

Aluminum Forging Parts

Drop Forged Chain

Conveyor Chain

Machining Parts

Copper Forging Parts

Zinc Zamak Forging Parts

Precision Machining Seamless Rectangular Tubes

CNC Machining Seamless Rectangular Tubes

CNC Round Hole Steel Tubes

Key Features & Benefits

CNC Machining Parts,

CNC Machining Services,