ASTM A554 TP304 Welded Pipe 180G for Structural and Decorative Applications

If you are looking for stainless steel decorative and structural tubing with an exquisite appearance, high surface finish, and stable mechanical properties, we can provide you with ASTM A554 TP304 SS Welded Pipe. It is widely used in architectural decoration, railings and handrails, furniture manufacturing, elevator decoration, and indoor and outdoor structural engineering.

 

GNEE's ASTM A554 TP304 stainless steel welded square pipe contains 18–20% chromium (Cr) and 8–10.5% nickel (Ni), offering excellent corrosion resistance, oxidation resistance, and good formability and weldability. It is particularly suitable for projects that require both aesthetics and durability.

 

Our ASTM A554 TP304 welded pipes are manufactured using high-precision forming and automatic welding processes, resulting in smooth and strong welds. The surface is polished to 180G, presenting a uniform and delicate brushed finish, combining decorative beauty with practical strength. The standard outer diameter range is 12mm–219mm, and wall thickness can be customized according to requirements, with strictly controlled dimensional tolerances. To ensure product quality, each batch of pipes undergoes chemical composition analysis, dimensional inspection, weld quality inspection, and surface roughness control. MTC, ISO system documents, and third-party inspection reports are also available.

ASTM A554 TP304 Tube Specification Chart

Standards Specification	ASME SA554 TP304 Tube
Standard	JIS, ASTM, EN, SUS, AISI, GB, DIN
Manufacturing Type	DOM / Welded / Seamless / Fabricated / ERW / CDS / CDW / CEW
Surface Finish	polished 320 grit, Mill finish, Polished 180 grit
Wall Thickness in Inch	0.049 - 0.375 Inch
Sizes in Inch	½ - 8 Inch Diameter
Service	Decoiling, Bending, Punching, Welding, Cutting, Moulding
Technique	Cold rolled, Cold drawn, Hot rolled, Extrusion Tube

 

ASTM A554 Tp304 Stainless Steel Welded Tube Chemical Composition

Grade	Carbon	Nickel	Manganese	Sulfur	Chromium	Phosphorus	Silicon
304	0.08	8.0-11.0	2	0.03	18.0-20.0	0.045	1

 

SA554 Grade Mt 304 Tubing Mechanical Properties

Material	Temperure	Heat	Yield Strength	Tensile Strength	Elongation
	Min.º F(º C)	Treatment	Ksi (MPa), Min.	Ksi (MPa), Min.
304	1900 (1040)	Solution	30(205)	75(515)	35

ASTM A554 Type 304 Tube Physical Properties

Grade	Mean Coefficient of Thermal Expansion (μm/m/°C)			Density (kg/m3)	Elastic Modulus (GPa)	Specific Heat 0-100°C (J/kg.K)	Thermal Conductivity (W/m.K)		Electrical Resistivity (nΩ.m)
	0-100°C	0-315°C	0-538°C				at 100°C	at 500°C
TP304	17.2	17.8	18.4	8000	193	500	16.2	21.5	720

 

ASME SA554 Tp304 Welded Tube Dimension Tolerance

NPS Designator	Permissible Variations in Outside Diameter
	Over In.	Under In.
1/8 to 1-1/2, incl	1/64 (0.015)	1/32 (0.031)
Over 1-1/2 to 4, incl	1/32 (0.031)	1/32 (0.031)
Over 4 to 8, incl	1/16 (0.062)	1/32 (0.031)
Over 8 to 18, incl	3/23 (0.093)	1/32 (0.031)

 

ASTM A554 TP304 Welded Pipe – Payment Terms & Shipping Methods

Item	Details
Product	ASTM A554 TP304 Stainless Steel Welded Pipe
Grade	TP304 (EN 1.4301)
Surface Finish	180G / 240G / 320G / 400G / BA / Mirror (Customizable)
Payment Terms	• T/T: 30% deposit, 70% balance before shipment • T/T 100% before shipment (small orders) • L/C at sight (for large or long-term orders) • Flexible terms negotiable for regular buyers
Trade Terms	FOB / CFR / CIF (Incoterms® 2020)
Shipping Methods	• Sea Freight (FCL / LCL) – most economical for bulk orders • Rail Transport – available for selected regions
Loading Port	Shanghai / Tianjin / Qingdao / Ningbo
Packaging	• Each pipe individually plastic-wrapped • Bundled with woven bags or steel straps • Wooden cases or pallets for export packing • Custom packaging available
Delivery Time	• Standard sizes in stock: 7–10 days • Customized production: 20–30 days
Quality Documents	Mill Test Certificate (EN 10204 3.1), Packing List, Commercial Invoice, Bill of Lading

 

ASTM A554 TP304 Welded Pipe Manufacturer