If you’re sourcing carbon steel pipe fittings for an OEM program, 1″ Bspt fitting is the kind of part we quote from CAD/STEP—not from a random photo.

What we check before quoting

Most delays come from fuzzy prints. For this pipe fitting, we look early at:

• thread + material not locked
• assumed pressure ratings
• MOQ vs replenishment plan

Materials, threads, and finish

Materials: 1020, 1045, 12L14, 1215, Q235B, 42crmo etc. (High strength and excellent machinability).   

Threads: NPT, NPTF, BSPP (G), BSPT (R/RP), Metric (M), UNF, UNEF, etc. (99% verified by Go/No-Go gauges).

Finish: Electroless Nickel Plating, Zinc Plating (Clear/Yellow), Passivation, Anodizing, Black Oxide, Heat treatment , Chrome plated,Dacromet,etcs.

Tolerance reference: Standard Tolerance:±0.02mm Critical dims should still be marked on your 2D.

Where this product usually shows up

Industrial fluid hardware and OEM replenishment where the BOM already names material and thread.

We don’t invent pressure ratings or media compatibility here. If your drawing or customer spec states them, we machine and inspect to those callouts.

How this part is usually made

Shop route is typically precision CNC machining in our Yuhuan plant. Secondary ops (plating, passivation, heat treat) only when specified.

Capability note from our spec sheet: Hot Forging / Red Punching: Eliminates internal porosity and enhances high-pressure resistance. Cold Heading: Ideal for high-speed, cost-effective mass production. Precision CNC…

First articles can include dimensional checks on the critical features you mark. Say what you need on the RFQ so inspection matches your buyer pack.

What to send for a quote

Email info@sspipefitting.com or use the inquiry form on this page. A clean package looks like:

• CAD/STEP + 2D with tolerances
• Material grade and finish
• Thread standard on each port
• Quantity (pilot + annual if known)
• Any documents you need (MTR, dimensional report)

MOQ guidance: Moq 2000pcs . Pilot lots are discussable once the drawing is frozen.

Category page for context: Carbon steel pipe fittings. The controlling document for this SKU is still your drawing.