Hi there,
I have tapered headtubes and bottom bracket shells for sale all year round, in both CroMo steel and stainless steel.
[Tapered HT]
Spec: IS42-IS52, OD46.5-56.5mm
Material: 2205 Duplex Stainless Steel
Length: 140/160/180mm for now (maybe more options in the future)
Weight: 200/242/274gram, plus ~40g of bearing cups
[Bottom Bracket Shells]
T47
Spec: OD51 (+0.1, -0.2) mm, internal relieved to 1.5mm wall thickness
Material: 2205 Duplex Stainless Steel
Width: 69, 74, 86.5mm
Skip-teeth T47 tap…haven’t got plan on making them in bulk, but hey, who knows 
BSA
Spec: OD38mm, or 40mm, internal relieved to 1.5mm wall thickness
Material: 2205 Duplex Stainless Steel
Width: 69, 74mm
Weight: 100g, 150g (OD38, 40)
All of the above can be done in CroMo, stainless or other material,
- In-stock products can be dispatched 1-2 times a week, no MOQ required.
- Custom orders, lead time: around 30days.
Feel free to contact me: caffeinefw@QQ.com , Mr. Michael Huang