The exact teapot form called "小圆圈汉瓦" is not a widely documented or standardized name in published sources, so its precise historical lineage is ambiguous. With that caveat, here is a safe, general description based on the name and common Chinese teapot traditions.

Brief history
Chinese domestic teapot design evolved over centuries, with many familiar forms emerging from the Jiangsu/Yixing zisha tradition from the late Ming and Qing periods onward. Artisans often gave pots descriptive names that reference size, silhouette, motifs, or historical styles (for example, terms invoking Han-era motifs or everyday objects). Small, named variants frequently reflect either regional workshop practice or individual master potters’ inventions rather than an ancient canonical type.

Note about the shape
Literally translated, 小圆圈汉瓦 reads as “small round-ring Han-tile.” That wording suggests a compact teapot with a circular or ring-like emphasis (a rounded body, ringed lid detail, or circular handle motif) and a decorative or profile element evocative of a tile or Han-style motif. If this is a Yixing-style teapot, expect a modest capacity optimized for gongfu brewing, close-fitting lid, and restrained, geometric decoration. Because the name is ambiguous, the above is an interpretive, not definitive, account.
Wood-fired handmade Yixing teapot made from Duanni clay sourced from the original Huanglongshan mine. Xu Shun Wei.